GrokさんとVibeコーディングしてYouTubeから字幕をwebvtt出力させてみた件

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WEBVTT

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so is it the art of the deal to just

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make a bunch of demands and then to back

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down from them and flip-flop every other

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day like a flippity floppity fish or is

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this yet another masterful 10D chess

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move in which President Trump has

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excluded tariffs essentially eliminating

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most of them from Chinese electronics

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phones laptops computer chips i mean

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what's even the point of tariffs then to

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bring manufacturing of clothing socks

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sweaters and shoes back to the US and so

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in a massive turn of events and arguably

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some might even say a massive defeat and

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a stunning loss of leverage for United

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States in negotiations in the coming

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weeks and months ahead the US has

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decided to just exclude basically

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everything from the reciprocal tariffs

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from China i mean we're talking about

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laptops smartphones chips computer parts

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flash memory drives SSDs media recording

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sound equipment and on this news the

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crypto markets have rallied with Bitcoin

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nearing 85,000 and this could be a buy

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signal this could actually be a bottom

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as we're seeing a pivot in the direction

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of the US government and we're going to

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see more deescalation ethereum is

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running up 4.9% the past 24 hours and

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this is something we need to be a bit

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careful about here because it seems to

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be running a little bit ahead of itself

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here and actually this could represent

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retail hype anytime Ethereum starts

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running ahead of Bitcoin I have to ask

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myself what are we fleeing to is it a

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flight to safety and hard assets like

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Bitcoin or is industry manufacturing is

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commercialization and growth back are we

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out of the recession in that case maybe

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Ethereum could run faster but if we

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check ourselves here this is where we

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need to be careful about just jumping

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back into these markets the White House

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deputy of staff clarifies that the

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original 20% tariffs are still on for

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China so this is where I'm thinking that

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a lot of the retail crypto traders may

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be jumping ahead of the train here

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you've got a lot of crypto djen traders

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on 100x leverage these ETH maxis trying

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to make their bags back because they've

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lost so much they're desperate out here

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and you know the smart money is going to

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know the tariff thing isn't entirely

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over you've still got 20% and this whole

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issue still needs to be resolved not to

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mention on Friday Apple had already run

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up 4% so some of this is definitely

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priced in already the market was

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expecting a deescalation nvidia was up

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3% on Friday so in my view we can't

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necessarily just expect out season to

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come back and to jump back into tech

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stocks and expect growth to come back to

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the US because there's still a lot of

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recessionary risks in play here you know

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the AI bubble has been popping deep sea

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came before the tariffs and as far as

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tariffs go we just lost a lot of

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negotiation ground and basically all of

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our leverage here right we're going to

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have negotiations with 75 plus countries

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as I recall and all of these countries

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are probably going to be asking for the

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same exclusions and exemptions that

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they're saying we're making for these

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big tech companies right they see that

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we're willing to back down we can back

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down i mean we're just flip-flopping

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back and forth and the weird thing is

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these tariff exemptions now

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disproportionately benefit big tech like

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Apple Nvidia Google you know we saw the

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big tech CEOs having their million-doll

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lunches with President Trump earlier did

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that play a part in this the optics

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aren't looking so good while all the

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meanwhile lower income Americans may be

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suffering more because they need to buy

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the low tax stuff and the small

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businesses may be hurt now well why

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don't they get exclusions too they're

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going to be asking for that and then car

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parts are also notably not exempt well

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what about Tesla and Elon Musk we've got

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to help them out too here so let's add

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an exemption for Tesla here too right we

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should do that and Tesla has been facing

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issues they had to halt orders in China

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for the US imported models because of

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the reciprocal tariffs that Beijing

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imposed on America tesla had to quietly

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remove the order button from the Model S

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and Model X vehicles and some are

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saying history will remember that China

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stood up against American imperialism

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and

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coercions in this grand show where the

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US waged war on the whole entire world

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and China said I got this i got this and

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they got it and the world has China to

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thank for saving their economies

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arguably the Chinese embassy stated give

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the bully an inch and he will take a

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mile well China did not back down and

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they gave not a single inch matching the

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US tariffs one for one up until 125% and

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with that China stating this is the end

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of escalations even if the US imposes

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higher tariffs it will no longer make

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economic sense and ultimately go down as

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a joke in world economic history is it a

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joke or is it the art of the deal i mean

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this could yet be a 4D 5D 100D chess

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move but the US could be in serious

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trouble here actually i mean we may have

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screwed ourselves here we're bankrupt

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guys we are going bankrupt fast here our

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debt is going parabolic to the moon at

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nearly 37 trillion at 37 trillion in

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debt with an interest rate of around 4%

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that we're paying we need about $1.5

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trillion in gross revenues just to pay

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off this debt and these tariffs was

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really the last chance we had at this

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the plan was to get Doge to save one

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trillion and then the tariffs would make

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the other trillion so we get two

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trillion in profit each year then we

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could get the debt under control now we

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don't have a plan anymore for our debt

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you see Doge quietly lowered their

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estimates of savings from 1 trillion to

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just 150 billion and this is not going

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to be enough and at the same time our

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spending exceeded our savings at 154

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billion and so effectively we have saved

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nothing year to date and to make matters

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worse we've got a surprise announcement

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another $1 trillion in military defense

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spending well where are we getting the

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money for all this tariffs Doge or are

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we printing so we need to have an

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accurate gauge of the economy here are

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we euphoric at the time when Google just

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announced they're laying off hundreds of

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employees in the Android Pixel and

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Chrome teams and Microsoft is also

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considering additional layoffs in May on

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managers and non-coders this time and so

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the economy is not doing that great and

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the main story continues to be the

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dollar index how strong is the dollar

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here it cratered actually to 99.8 under

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100 the first time it's reached this

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level since maybe 3 years ago analysts

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that the question of a potential dollar

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confidence crisis has now been

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definitely answered we're experiencing

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one in full force the dollar collapse is

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working as a barometer of sell America

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and so maybe we don't have the cards

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here actually with our full transparency

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which is notable we've ended up showing

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everybody our cards and they know our

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intentions they know how to prepare for

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this now and they know that we don't

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have much leverage we just gave up a

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bunch of our leverage for free basically

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and this is pushing our allies and trade

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partners away into China's waiting arms

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so China is now stepping up efforts to

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diversify away from US markets promoting

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itself as a responsible trading partner

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china's President Xiinping recently went

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over to Spain to build more strategic

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resilient partnerships looks like they

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had a great time over there you've got

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President Xi heading to Vietnam Malaysia

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Cambodia they're talking with Saudi

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Arabia South Africa and now they're

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seeking British backing to defend

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international trade you've got France

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working alongside the European

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Commission in full unity with a clear

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goal to negotiate the removal of unfair

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tariffs and we have EU leaders planning

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a Beijing trip in July for summit with

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China's President Xi so the fundamental

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problem here is we showed everybody our

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cards and showed them we were willing to

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abuse our power as the global reserve

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currency the trade partner for all these

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countries and now they're preparing to

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exclude and bypass the United States and

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they're not going to be caught off guard

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again because they're not going to be

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fooled twice and every country now is

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rethinking any US technology products or

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services that they may be dependent on

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and you have the EU now also taking a

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look at possibly levying fines on

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American tech companies they are

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developing retaliatory measures an

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example being levying the advertising

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revenues of digital services so this is

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like essentially putting tariffs on

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Google Apple or X's ad revenues the head

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of the EU stated "It is a complete

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inflection point in global trade we will

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never go back to the status quo." And so

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you can imagine if we somehow extract

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and everybody's max extracting here

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let's say we extract $100 million from

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the EU they're going to extract $100

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million in retaliation from say Google

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Facebook and X or Apple or any of our

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digital services and technologies

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they're going to recuperate their cost

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one way or another and so really the

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inflection point is for big tech and

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we're also seeing the continued

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implosion of the AI bubble meta's AI

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research lab is reportedly dying a slow

00:09:00.000 --> 00:09:02.000
death some insiders are saying as the

00:09:02.000 --> 00:09:04.000
head of AI research announced her

00:09:04.000 --> 00:09:06.000
departure last week the timing of the

00:09:06.000 --> 00:09:08.000
resignation raised eyebrows you know

00:09:09.000 --> 00:09:11.000
people wondering was this just a

00:09:11.000 --> 00:09:13.000
personal thing or was there some

00:09:12.000 --> 00:09:14.000
critical fundamental issue with Meta

00:09:14.000 --> 00:09:16.000
Lama 4 models which rolled out in

00:09:16.000 --> 00:09:18.000
controversy drawing criticism from

00:09:19.000 --> 00:09:21.000
possibly inflated performance metrics

00:09:22.000 --> 00:09:24.000
and we're also seeing that I mean some

00:09:23.000 --> 00:09:25.000
tech CEOs are going to jail now over AI

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which was actually just manual human

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labor so they just had a bunch of people

00:09:30.000 --> 00:09:32.000
in the Philippines pretending to be AI

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going around acting like robots doing

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some virtual shopping for you and raised

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a couple million dollars based on that

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now the whole scheme is unwinding you've

00:09:42.000 --> 00:09:44.000
got Mirror Moradi from Open AI

00:09:44.000 --> 00:09:46.000
continuing to raise $2 billion seed

00:09:47.000 --> 00:09:49.000
round on essentially no product and no

00:09:49.000 --> 00:09:51.000
revenues to speak of emerging from

00:09:51.000 --> 00:09:53.000
stealth on nothing so the tech sector

00:09:54.000 --> 00:09:56.000
may still be in this AI bubble imploding

00:09:57.000 --> 00:09:59.000
in slow motion which is obuscated by the

00:10:00.000 --> 00:10:02.000
tariffs confusion but even without the

00:10:02.000 --> 00:10:04.000
tariffs we may still see this implosion

00:10:04.000 --> 00:10:06.000
happening and the dollar may continue to

00:10:06.000 --> 00:10:08.000
weaken now that it's been tested

00:10:09.000 --> 00:10:11.000
critical cracks are showing and it's

00:10:11.000 --> 00:10:13.000
been revealed that investors are fleeing

00:10:13.000 --> 00:10:15.000
not to the dollar as a safe haven

00:10:15.000 --> 00:10:17.000
anymore they're going to hard assets

00:10:16.000 --> 00:10:18.000
like gold or bitcoin now at 85500 and in

00:10:20.000 --> 00:10:22.000
my view we may still be in a recession

00:10:23.000 --> 00:10:25.000
right what are we building out here you

00:10:25.000 --> 00:10:27.000
know the AI robots thing is going to

00:10:27.000 --> 00:10:29.000
take another 10 20 years just to play

00:10:29.000 --> 00:10:31.000
out and chat GBT subscriptions cannot

00:10:32.000 --> 00:10:34.000
pay back billions of dollars hundreds of

00:10:34.000 --> 00:10:36.000
billions of dollars worth of investments

00:10:36.000 --> 00:10:38.000
right that's not going to recoup the

00:10:38.000 --> 00:10:40.000
costs let's take a look at the Bitcoin

00:10:40.000 --> 00:10:42.000
hash rate here it is skyrocketing to

00:10:42.000 --> 00:10:44.000
all-time highs and price follows hash

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rate look Look at the divergence here on

00:10:47.000 --> 00:10:49.000
the price versus the hash rate now if

00:10:49.000 --> 00:10:51.000
the price were to realign with hash rate

00:10:51.000 --> 00:10:53.000
which it inevitably does then we'd be at

00:10:53.000 --> 00:10:55.000
like over 100k now but this could be an

00:10:57.000 --> 00:10:59.000
opportune moment for you to buy the dip

00:10:59.000 --> 00:11:01.000
because there is a fundamental change in

00:11:02.000 --> 00:11:04.000
course where the tariff negotiations

00:11:04.000 --> 00:11:06.000
have stopped escalating and now we are

00:11:06.000 --> 00:11:08.000
in a deescalatory phase in which we may

00:11:09.000 --> 00:11:11.000
see more liquidity injections coming

00:11:11.000 --> 00:11:13.000
back flowing into the markets as we are

00:11:14.000 --> 00:11:16.000
deescalating and tariffs are starting to

00:11:16.000 --> 00:11:18.000
come down we've already reached max

00:11:18.000 --> 00:11:20.000
tariff we can't increase the tariffs

00:11:20.000 --> 00:11:22.000
anymore 500 1,000% and so with the

00:11:23.000 --> 00:11:25.000
liquidity starting to flow back into the

00:11:25.000 --> 00:11:27.000
markets the only question is which asset

00:11:27.000 --> 00:11:29.000
do you want to get into and if you're

00:11:29.000 --> 00:11:31.000
bearish on the economy kind of like I am

00:11:31.000 --> 00:11:33.000
and you think there's still a lot of

00:11:32.000 --> 00:11:34.000
counterparty risk to tech and the AI

00:11:34.000 --> 00:11:36.000
bubble then you may want to get into

00:11:36.000 --> 00:11:38.000
hard assets like say Bitcoin and the Fed

00:11:38.000 --> 00:11:40.000
has two choices it can either not print

00:11:41.000 --> 00:11:43.000
in which the economy either does well or

00:11:43.000 --> 00:11:45.000
does poorly in either case you probably

00:11:45.000 --> 00:11:47.000
want some hard assets or if the economy

00:11:47.000 --> 00:11:49.000
is really doing poorly then the Fed's

00:11:49.000 --> 00:11:51.000
going to be printing more you're going

00:11:50.000 --> 00:11:52.000
to still want hard assets and so we've

00:11:52.000 --> 00:11:54.000
kind of got this Fed put in place here

00:11:54.000 --> 00:11:56.000
they've already signal they're ready to

00:11:56.000 --> 00:11:58.000
step into the markets if necessary so

00:11:59.000 --> 00:12:01.000
they're willing to print and so with

00:12:01.000 --> 00:12:03.000
that hope you enjoyed the update let me

00:12:03.000 --> 00:12:05.000
know your market moves in the comments

00:12:04.000 --> 00:12:06.000
below i'll see you there personally I

00:12:07.000 --> 00:12:09.000
would like to see the US take more of a

00:12:09.000 --> 00:12:11.000
respectful stance against nations and

00:12:11.000 --> 00:12:13.000
workers and laborers people who are

00:12:13.000 --> 00:12:15.000
working hard to make our products goods

00:12:15.000 --> 00:12:17.000
and services and ship them into our

00:12:16.000 --> 00:12:18.000
countries and we owe them some basic

00:12:19.000 --> 00:12:21.000
respect for that i will leave you with a

00:12:21.000 --> 00:12:23.000
speech from President Xiinping chinese

00:12:23.000 --> 00:12:25.000
people have never bullied oppressed or

00:12:25.000 --> 00:12:27.000
subjugated the people of any other

00:12:26.000 --> 00:12:28.000
country and we never will we will also

00:12:28.000 --> 00:12:30.000
never allow any foreign force to bully

00:12:30.000 --> 00:12:32.000
oppress or subjugate us so that's it for

00:12:34.000 --> 00:12:36.000
now if you like the video give a like

00:12:35.000 --> 00:12:37.000
and subscribe see you in the next one

00:12:38.000 --> 00:12:40.000
[Applause]

00:12:41.000 --> 00:12:43.000
[Music]

00:12:42.000 --> 00:12:44.000
[Applause]

00:12:43.000 --> 00:12:45.000
[Music]

00:12:44.000 --> 00:12:46.000
[Applause]

00:12:46.000 --> 00:12:48.000
[Music]

00:12:50.000 --> 00:12:52.000
[Applause]

00:12:51.000 --> 00:12:53.000
[Music]

import sys
import re
import os
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from bs4 import BeautifulSoup
import webvtt
import time

def extract_video_id(url):
    """YouTube URLから動画IDを抽出"""
    patterns = [
        r'(?:https?:\/\/)?(?:www\.)?youtube\.com\/watch\?v=([^&]+)',
        r'(?:https?:\/\/)?youtu\.be\/([^?]+)'
    ]
    for pattern in patterns:
        match = re.match(pattern, url)
        if match:
            return match.group(1)
    raise ValueError("無効なYouTube URLです")

def extract_youtube_transcript_to_vtt(url, quiet=False):
    # Seleniumのオプション設定（Ubuntu向け）
    chrome_options = Options()
    chrome_options.add_argument("--headless")
    chrome_options.add_argument("--no-sandbox")
    chrome_options.add_argument("--disable-dev-shm-usage")
    chrome_options.add_argument("--disable-gpu")
    chrome_options.add_argument("user-agent=Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36")
    chrome_options.add_argument("--window-size=1920,1080")
    chrome_options.add_argument("--disable-blink-features=AutomationControlled")
    chrome_options.add_experimental_option("excludeSwitches", ["enable-automation"])
    chrome_options.add_argument("--disable-extensions")
    chrome_options.add_argument("--start-maximized")

    # WebDriverの初期化
    driver = webdriver.Chrome(options=chrome_options)
    
    try:
        # YouTubeページを開く
        driver.get(url)
        if not quiet:
            print("ページを読み込みました:", url)
        time.sleep(3)
        
        # 「Before you continue to YouTube」の「Reject all」ボタンを探す
        try:
            reject_all_button = WebDriverWait(driver, 15).until(
                EC.element_to_be_clickable((By.XPATH, '//button[contains(@class, "yt-spec-button-shape-next") and (contains(text(), "Reject") or contains(@aria-label, "Reject"))]'))
            )
            if not quiet:
                print("「Reject all」ボタンが見つかりました:", reject_all_button.get_attribute("outerHTML"))
            driver.execute_script("arguments[0].scrollIntoView(true);", reject_all_button)
            driver.execute_script("arguments[0].click();", reject_all_button)
            try:
                WebDriverWait(driver, 5).until(
                    EC.invisibility_of_element((By.TAG_NAME, "tp-yt-iron-overlay-backdrop"))
                )
                if not quiet:
                    print("オーバーレイが消えました")
            except:
                if not quiet:
                    print("オーバーレイの待機中にエラーが発生しましたが、続行します")
        except Exception as e:
            if not quiet:
                print("「Reject all」ボタンが見つからないか、クリックできませんでした:", e)
                print("ダイアログが表示されていない可能性があります。処理を続行します。")

        # 広告のスキップや閉じる処理
        for _ in range(2):
            try:
                skip_ad_button = WebDriverWait(driver, 5).until(
                    EC.element_to_be_clickable((By.XPATH, '//button[contains(@class, "ytp-ad-skip-button") or contains(text(), "Skip")]'))
                )
                if not quiet:
                    print("広告の「スキップ」ボタンが見つかりました:", skip_ad_button.get_attribute("outerHTML"))
                driver.execute_script("arguments[0].click();", skip_ad_button)
                if not quiet:
                    print("広告をスキップしました")
                time.sleep(1)
            except:
                if not quiet:
                    print("広告の「スキップ」ボタンが見つかりませんでした。広告がないか、スキップ不要です。")
                break

        # 「...more」ボタンをクリック
        try:
            more_button = WebDriverWait(driver, 40).until(
                EC.element_to_be_clickable((By.XPATH, '//tp-yt-paper-button[@id="expand"]'))
            )
            if not quiet:
                print("「...more」ボタンが見つかりました:", more_button.get_attribute("outerHTML"))
            driver.execute_script("arguments[0].scrollIntoView({block: 'center', behavior: 'smooth'});", more_button)
            time.sleep(0.5)
            driver.execute_script("arguments[0].click();", more_button)
            time.sleep(2)
        except Exception as e:
            if not quiet:
                print("「...more」ボタンが見つからないか、クリックできませんでした:", e)
                driver.save_screenshot("more_button_error.png")
                with open("more_button_error.html", "w", encoding="utf-8") as f:
                    f.write(driver.page_source)
                print("ページのHTMLを more_button_error.html に、スクリーンショットを more_button_error.png に保存しました")
            return None, None

        # 「Show transcript」ボタンをクリック
        try:
            transcript_button = WebDriverWait(driver, 10).until(
                EC.element_to_be_clickable((By.XPATH, '//button[@aria-label="Show transcript"]'))
            )
            if not quiet:
                print("「Show transcript」ボタンが見つかりました:", transcript_button.get_attribute("outerHTML"))
            driver.execute_script("arguments[0].scrollIntoView(true);", transcript_button)
            driver.execute_script("arguments[0].click();", transcript_button)
            time.sleep(2)
        except Exception as e:
            if not quiet:
                print("「Show transcript」ボタンが見つからないか、クリックできませんでした:", e)
            return None, None

        # トランスクリプトコンテナがロードされるまで待機
        try:
            WebDriverWait(driver, 20).until(
                EC.presence_of_element_located((By.ID, 'body'))
            )
            if not quiet:
                print("トランスクリプトのコンテナ（<div id='body'>）がロードされました")
        except Exception as e:
            if not quiet:
                print("トランスクリプトコンテナの読み込みに失敗しました:", e)
                driver.save_screenshot("transcript_error.png")
                with open("transcript_error.html", "w", encoding="utf-8") as f:
                    f.write(driver.page_source)
                print("ページのHTMLを transcript_error.html に、スクリーンショットを transcript_error.png に保存しました")
            return None, None

        # トランスクリプトのセグメントコンテナがロードされるまで待機
        max_attempts = 3
        for attempt in range(max_attempts):
            try:
                WebDriverWait(driver, 40).until(
                    EC.presence_of_element_located((By.ID, 'segments-container'))
                )
                if not quiet:
                    print("トランスクリプトのセグメントコンテナ（<div id='segments-container'>）がロードされました")
                break
            except Exception as e:
                if not quiet:
                    print(f"試行 {attempt+1}/{max_attempts}: トランスクリプトセグメントコンテナの読み込みに失敗しました:", e)
                if attempt < max_attempts - 1:
                    if not quiet:
                        print("再試行します...")
                    time.sleep(5)
                    driver.execute_script("arguments[0].click();", transcript_button)
                else:
                    if not quiet:
                        print("最終試行でも失敗しました")
                        driver.save_screenshot("transcript_error.png")
                        with open("transcript_error.html", "w", encoding="utf-8") as f:
                            f.write(driver.page_source)
                        print("ページのHTMLを transcript_error.html に、スクリーンショットを transcript_error.png に保存しました")
                    return None, None

        # ページのHTMLを取得
        page_source = driver.page_source
        soup = BeautifulSoup(page_source, 'html.parser')

        # トランスクリプトのdiv要素を抽出
        transcript_div = soup.find('div', id='body', class_='style-scope ytd-transcript-search-panel-renderer')
        if not transcript_div:
            if not quiet:
                print("トランスクリプトのコンテナ（<div id='body' class='style-scope ytd-transcript-search-panel-renderer'>）が見つかりませんでした")
                driver.save_screenshot("transcript_error.png")
                with open("transcript_error.html", "w", encoding="utf-8") as f:
                    f.write(driver.page_source)
                print("ページのHTMLを transcript_error.html に、スクリーンショットを transcript_error.png に保存しました")
            return None, None

        # トランスクリプトコンテナの内容をログに記録
        if not quiet:
            print("トランスクリプトコンテナのHTML:", str(transcript_div)[:2000])

        # セグメントコンテナを取得
        segments_container = transcript_div.find('div', id='segments-container')
        if not segments_container:
            if not quiet:
                print("セグメントコンテナ（<div id='segments-container'>）が見つかりませんでした")
                driver.save_screenshot("transcript_error.png")
                with open("transcript_error.html", "w", encoding="utf-8") as f:
                    f.write(driver.page_source)
                print("ページのHTMLを transcript_error.html に、スクリーンショットを transcript_error.png に保存しました")
            return None, None

        # セグメントコンテナの内容をログに記録
        if not quiet:
            print("セグメントコンテナのHTML:", str(segments_container)[:2000])

        # トランスクリプトのセグメントを取得（完全なセグメントのみ）
        segments = segments_container.find_all('div', class_='segment style-scope ytd-transcript-segment-renderer')
        if not segments:
            if not quiet:
                print("完全なトランスクリプトのセグメント（segment style-scope ytd-transcript-segment-renderer）が見つかりませんでした")
            segments = segments_container.find_all('div', class_=lambda x: x and 'ytd-transcript-segment-renderer' in x)
            if segments:
                if not quiet:
                    print("代替セレクタでセグメントが見つかりました:", len(segments))
            else:
                if not quiet:
                    print("代替セレクタでもセグメントが見つかりませんでした")
                    driver.save_screenshot("transcript_error.png")
                    with open("transcript_error.html", "w", encoding="utf-8") as f:
                        f.write(driver.page_source)
                    print("ページのHTMLを transcript_error.html に、スクリーンショットを transcript_error.png に保存しました")
                return None, None

        # VTTファイルを作成
        vtt = webvtt.WebVTT()
        if not quiet:
            print(f"トランスクリプトセグメント数: {len(segments)}")

        # トランスクリプトの各セグメントを処理
        i = 0
        while i < len(segments):
            segment = segments[i]
            if not quiet:
                print(f"セグメント {i+1} のHTML:", str(segment)[:500])

            # タイムスタンプを取得
            timestamp_elem = segment.find('div', class_='segment-timestamp style-scope ytd-transcript-segment-renderer')
            timestamp = timestamp_elem.text.strip() if timestamp_elem else None

            # テキストを取得
            text_elem = segment.find('yt-formatted-string', class_='segment-text style-scope ytd-transcript-segment-renderer')
            text = text_elem.text.strip() if text_elem else None

            # テキストがなく、次のセグメントにテキストがある場合、マージを試みる
            if not text and i + 1 < len(segments):
                next_segment = segments[i + 1]
                next_text_elem = next_segment.find('yt-formatted-string', class_='segment-text style-scope ytd-transcript-segment-renderer')
                next_timestamp_elem = next_segment.find('div', class_='segment-timestamp style-scope ytd-transcript-segment-renderer')
                
                if next_text_elem and not next_timestamp_elem:
                    text = next_text_elem.text.strip()
                    if not quiet:
                        print(f"セグメント {i+1} にテキストなし。セグメント {i+2} のテキストをマージ: {text}")
                    i += 1

            if not quiet:
                print(f"セグメント {i+1}: タイムスタンプ={timestamp}, テキスト={text}")

            if not timestamp or not text:
                if not quiet:
                    print(f"セグメント {i+1} のタイムスタンプまたはテキストが欠けています。スキップします")
                i += 1
                continue

            # タイムスタンプを秒に変換
            try:
                time_parts = timestamp.split(':')
                minutes = int(time_parts[0])
                seconds = int(time_parts[1])
                start_time = minutes * 60 + seconds
                end_time = start_time + 2  # 仮に2秒
                start_str = f"{start_time // 60:02d}:{start_time % 60:02d}.000"
                end_str = f"{end_time // 60:02d}:{end_time % 60:02d}.000"
            except (ValueError, IndexError) as e:
                if not quiet:
                    print(f"セグメント {i+1} のタイムスタンプ解析エラー: {e}")
                i += 1
                continue

            # WebVTTキャプションを追加
            caption = webvtt.Caption(
                start=start_str,
                end=end_str,
                text=text
            )
            vtt.captions.append(caption)
            i += 1

        if not vtt.captions:
            if not quiet:
                print("VTTキャプションが生成されませんでした。セグメントに有効なデータがない可能性があります")
                driver.save_screenshot("transcript_error.png")
                with open("transcript_error.html", "w", encoding="utf-8") as f:
                    f.write(driver.page_source)
                print("ページのHTMLを transcript_error.html に、スクリーンショットを transcript_error.png に保存しました")
            return None, None

        if not quiet:
            print("VTTキャプションを生成しました")
        return vtt, video_id

    finally:
        driver.quit()

if __name__ == "__main__":
    if len(sys.argv) < 2:
        print("使用法: python get_vtt_from_youtube.py <YouTube_URL> [--quiet]")
        sys.exit(1)

    url = sys.argv[1]
    quiet = "--quiet" in sys.argv

    try:
        video_id = extract_video_id(url)
        vtt, extracted_video_id = extract_youtube_transcript_to_vtt(url, quiet)
        if vtt:
            output_file = f"{extracted_video_id}.vtt"
            if os.path.exists(output_file):
                print(f"警告: {output_file} は既に存在します。上書きしますか？ [y/N]")
                if input().lower() != 'y':
                    print("処理を中止しました")
                    sys.exit(1)
            print(f"生成されたVTT内容を {output_file} に保存します")
            vtt.save(output_file)  # webvttライブラリで直接保存
            print(f"{output_file} を保存しました")
        else:
            print("トランスクリプトの取得に失敗しました")
    except ValueError as e:
        print(f"エラー: {e}")
        sys.exit(1)