[FFmpeg-devel] [PATCH]lavc: Allow forcing work-around for x264 cabac 8x8 4:4:4 bug

[wm4]

On Mon, 4 Dec 2017 00:56:36 +0000
Mark Thompson <sw at jkqxz.net> wrote:

> On 04/12/17 00:09, Carl Eugen Hoyos wrote:
> > Hi!
> > 
> > Attached patch fixes ticket #6717, files without sei can be produced
> > with remuxing and seeking, even if this is a (separate) bug, such
> > files exist in the wild.
> > 
> > Please comment, Carl Eugen  
> 
> File are currently fixable by remuxing with:
> 
> -bsf:v 'h264_metadata=sei_user_data=dc45e9bde6d948b7962cd820d923eeef+x264 - core 150'

Is that only in the first packet? Then it doesn't work if you start
playback at a later frame, unless you somehow decode the first packet
anyway.

IMO libavcodec should detect buggy files without relying on version
info.