[FFmpeg-trac] #4446(avcodec:closed): H264 with changing pps_id between fields fails to decode (was: H264 with changing pps_id within a AU fails to decode)

[FFmpeg]

#4446: H264 with changing pps_id between fields fails to decode
-------------------------------------+-------------------------------------
             Reporter:  michael      |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:  fixed
             Keywords:  h264,        |               Blocked By:
  regression                         |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by michael:

Old description:

> Changing PPS_id between slices of a AU is not allowed in H264 so these
> samples are strictly speaking invalid but it would be nice to support
> them anyway.
>
> This has been reported by Vittorio Giovara to me privately, But he was
> not able to provide a sample file, so its not easy to fix. Its a "AVCHD
> 1080i60 file".
>
> Regression since e708424b70bef8641e8a090ec4d9e8c4490db87e
>
> {{{
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'pps_id_change.mov':
>   Metadata:
>     major_brand     : qt
>     minor_version   : 537199360
>     compatible_brands: qt
>     creation_time   : 2015-04-01 21:53:13
>   Duration: 00:30:21.82, start: 0.000021, bitrate: 13508 kb/s
>     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661),
> yuv420p(bt709), 1920x1080 [SAR 1:1 DAR 16:9], 11936 kb/s, 29.97 fps,
> 29.97 tbr, 2997 tbn, 59.94 tbc (default)
>     Metadata:
>       creation_time   : 2015-04-01 21:53:13
>       handler_name    : Apple Alias Data Handler
>       encoder         : AVCHD 1080i60
>       timecode        : 00:00:00;00
>     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz,
> stereo, s16, 1536 kb/s (default)
>     Metadata:
>       creation_time   : 2015-04-01 21:53:14
>       handler_name    : Apple Alias Data Handler
>     Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
>     Metadata:
>       creation_time   : 2015-04-01 21:53:14
>       handler_name    : Apple Alias Data Handler
>       timecode        : 00:00:00;00
> Unsupported codec with id 0 for input stream 2
> }}}

New description:

 Changing PPS_id between slices of a AU is not allowed in H264, its allowed
 though to change between fields

 This has been reported by Vittorio Giovara to me privately, But he was not
 able to provide a sample file, so its not easy to fix. Its a "AVCHD
 1080i60 file".

 Regression since e708424b70bef8641e8a090ec4d9e8c4490db87e

 {{{
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'pps_id_change.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2015-04-01 21:53:13
   Duration: 00:30:21.82, start: 0.000021, bitrate: 13508 kb/s
     Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661),
 yuv420p(bt709), 1920x1080 [SAR 1:1 DAR 16:9], 11936 kb/s, 29.97 fps, 29.97
 tbr, 2997 tbn, 59.94 tbc (default)
     Metadata:
       creation_time   : 2015-04-01 21:53:13
       handler_name    : Apple Alias Data Handler
       encoder         : AVCHD 1080i60
       timecode        : 00:00:00;00
     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz,
 stereo, s16, 1536 kb/s (default)
     Metadata:
       creation_time   : 2015-04-01 21:53:14
       handler_name    : Apple Alias Data Handler
     Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
     Metadata:
       creation_time   : 2015-04-01 21:53:14
       handler_name    : Apple Alias Data Handler
       timecode        : 00:00:00;00
 Unsupported codec with id 0 for input stream 2
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/4446#comment:2>
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