[FFmpeg-devel] [PATCH]Do not use mjpeg frame-threads with cbr and threads=auto

[Reimar Döffinger]

Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
>Michael Niedermayer <michaelni <at> gmx.at> writes:
>
>> > +       && !(avctx->flags & CODEC_FLAG_QSCALE))
>> > +        avctx->thread_type &= ~FF_THREAD_FRAME;
>> 
>> i would reduce the number of threads to 1 with slice 
>> threads you generate jpegs with resync markers, i have no
>> idea how widely binary decoders support such mjpegs
>
>I tried to find a decoder that doesn't support slice-encoded 
>(m)jpeg but couldn't find one. Where you thinking about a 
>particular decoder?

I doubt he was, but I would imagine digital cameras and old mobile phones might be typical ones to miss support since they wouldn't normally across such files.