Quote:
Originally Posted by roozhou
BIG FAT WARNING:
Official ffmpeg does NOT support -vcodec copy from mkv when b-frame is used. And this is not to be fixed in the near future.
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I'm pretty sure this was fixed a month or two ago. I've been using -vcodec copy with bframes just fine. I just tested it on an MKV and it works quite perfectly.
Furthermore, if this was the issue, he would be getting a very specific error message. Which he isn't getting.
As kierank said, FLV requires that the first timestamp be zero.