[FFmpeg-devel] [PATCH 2/2] avcodec/videotoolbox: fix decoding of some h264 bitstreams

Hendrik Leppkes h.leppkes at gmail.com
Mon Sep 25 10:02:36 EEST 2017

On Mon, Sep 25, 2017 at 3:31 AM, Aman Gupta <ffmpeg at tmm1.net> wrote:
> How do the other hwaccels handle mid-stream SPS changes?

Real HWAccels (ie. VAAPI, VDPAU or DXVA) communicate the SPS/PPS
content for every frame, they don't keep a persistent state internally
- that way the only "state" is the frame size and pixel format, and
when those change get_format is called and the hwaccel re-initialized.

- Hendrik

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