I cannot upload any video to my channel, wtf @TeamYouTube??? The server has rejected the file? Excuse me?pic.twitter.com/aKAdPzfdKv
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Also, I can watch the video from the beginning to the end just fine in YouTube Studio and on Google Drive as well. So my only guess is this: from one day to another @TeamYouTube just stopped supporting H.264 MP4's. There's literally no other explanation to this.
Have you tried on a different connection? Maybe your internet is bouncing the upload off.
Yes, I'm at my workplace actually where we have a completely different type of conenction from a completely different service provider, at home we have UPC and at work we have Invitech I guess.
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