[FFmpeg-user] Fifo muxer with ISMV output results in corrupted video

[andrei ka]

pretty messy command with a few redundancies,  but the funniest one -an and
-c:a combo

Le jeu. 25 juin 2020 à 14:35, Gyan Doshi <ffmpeg at gyani.pro> a écrit :

>
>
> On 25-06-2020 05:17 pm, Louis Geuten wrote:
> > Hello,
> >
> > It seems that using the argument "-flags +global_header" with the
> bitstream
> > filter "dump_extra" fixes the issue.
> > Why this isn't needed when directly muxing with ISMV instead of fifo is
> > beyond me.
>
> Each muxer has a list of flags; those relevant to encoders are conveyed
> by ffmpeg to that encoder.
>
> The fifo muxer isn't a muxer per-se but an intermediary layer dressed up
> as a muxer. It won't necessarily share the relevant flags with the child
> muxer, so they have to be manually set by the user.
>
> Gyan
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