H264 with changing pps_id between fields fails to decode

[Michael Niedermayer]

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

[Michael Niedermayer]

Fixed in 98d0c4236c7542c87f012228d3bc88aea67bddc2