[FFmpeg-devel] [PATCH 3/9] avcodec/videotoolbox: h264 decoder on iOS is unable to decode interlaced video

Aman Gupta ffmpeg at tmm1.net
Sat Sep 5 00:44:44 EEST 2020


On Tue, Sep 26, 2017 at 4:20 AM Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> 2017-09-26 2:36 GMT+02:00 Aman Gupta <ffmpeg at tmm1.net>:
>
>
>
> > +   case kCMVideoCodecType_H264 : {
>
> > +      H264Context *h = avctx->priv_data;
>
> > +      if (TARGET_OS_IPHONE && h->ps.sps->frame_mbs_only_flag == 0) {
>
>
>
> I believe that for DVB 1080 transmissions the flag is
>
> never set even for progressive frames, so this has


Do you know where I could find a sample of such a transmission?

Aman


>
> to be conditional depending on a new user option.
>
> Imo, the default should be not to abort but others may
>
> disagree.
>
>
>
> Carl Eugen
>
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