On 29-01-2019 03:35 PM, Gabriele Greco wrote:
I've some hundreds of broken h264 mp4s that have been encoded with nvenc
ffmpeg encoder with conflicting options (-vprofile baseline -bf3), these
files pretends to be baseline but they really have some B frames inside,
but those B frames are marked by the container as P, so that VLC and ffmpeg
fails to decode them and keep the previous I frame.

The files are reported by ffprobe as: I - P - P - P - P - P - P - I - P - P
- P - P - P - P - I ... but they are really I - B - B - B - B - B - B - I -
B - B - B - B - B - B - I ...

Can't reproduce. With ffprobe on your sample, I get

    I B B B P B B B P B B B P ...

Gyan
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