[FFmpeg-trac] #6418(undetermined:open): ffmpeg QSV doesnt work with live streams

[FFmpeg]

#6418: ffmpeg QSV doesnt work with live streams
-------------------------------------+-------------------------------------
             Reporter:  rycius       |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  qsv          |               Resolution:
  regression                         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by lizhong1008):

 Commit 559370f2c45110afd8308eec7194437736c323d4 should fix h264/h265
 issue. But it doesn't fix mpeg2 and similar patch is needed.
 Where I can download the mpeg2 file "tmp.ts" of comments 18?

 commit 559370f2c45110afd8308eec7194437736c323d4
 Author: Ruiling, Song <ruiling.song at intel.com>
 Date:   Wed Jan 24 10:14:51 2018 +0800

     qsv: Skip the packet if decoding failure

     MediaSDK may fail to decode some frame, just skip it.
     Otherwise, it will keep decoding the failure packet repeatedly
     without processing any packet afterwards.

     Signed-off-by: Ruiling Song <ruiling.song at intel.com>
     Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

 diff --git a/libavcodec/qsvdec_h2645.c b/libavcodec/qsvdec_h2645.c
 index 83880dc..78a7b61 100644
 --- a/libavcodec/qsvdec_h2645.c
 +++ b/libavcodec/qsvdec_h2645.c
 @@ -153,8 +153,12 @@ static int qsv_decode_frame(AVCodecContext *avctx,
 void *data,
          }

          ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame,
 &s->buffer_pkt);
 -        if (ret < 0)
 +        if (ret < 0){
 +            /* Drop buffer_pkt when failed to decode the packet.
 Otherwise,
 +               the decoder will keep decoding the failure packet. */
 +            av_packet_unref(&s->buffer_pkt);
              return ret;
 +        }

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6418#comment:19>
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