[FFmpeg-trac] #6208(avformat:new): flac misdetection

FFmpeg trac at avcodec.org
Wed Mar 1 00:48:11 EET 2017


#6208: flac misdetection
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  tyngdekraften                      |                 Priority:  normal
               Status:  new          |                  Version:  git-
            Component:  avformat     |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 flac gets probed as cavs

 How to reproduce:
 {{{
 % ffmpeg -i qyijql.flac
 ffmpeg version N-83692-gb8a7dcbde2
 libavutil      55. 47.100 / 55. 47.100
 libavcodec     57. 81.100 / 57. 81.100
 libavformat    57. 66.102 / 57. 66.102
 libavdevice    57.  3.100 / 57.  3.100
 libavfilter     6. 74.100 /  6. 74.100
 libavresample   3.  2.  0 /  3.  2.  0
 libswscale      4.  3.101 /  4.  3.101
 libswresample   2.  4.100 /  2.  4.100
 libpostproc    54.  2.100 / 54.  2.100
 [file @ 0xb64a00] Setting default whitelist 'file,crypto'
 [cavsvideo @ 0xb641a0] Format cavsvideo probed with size=2048 and score=51
 [cavsvideo @ 0xb641a0] Before avformat_find_stream_info() pos: 0 bytes
 read:1024 seeks:0 nb_streams:1
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] stc 0x00 is too large
 [cavs @ 0xb65820] Dimensions invalid
 [cavs @ 0xb65820] no frame decoded
 [cavsvideo @ 0xb641a0] decoding for stream 0 failed
 [cavsvideo @ 0xb641a0] Could not find codec parameters for stream 0
 (Video: cavs, yuv420p): unspecified size
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 [cavsvideo @ 0xb641a0] After avformat_find_stream_info() pos: 1024 bytes
 read:1024 seeks:0 frames:1
 Input #0, cavsvideo, from '/tmp/qyijql.flac':
   Duration: N/A, bitrate: N/A
     Stream #0:0, 1, 1/1200000: Video: cavs, yuv420p, 25 tbr, 1200k tbn, 25
 tbc
 Successfully opened the file.
 At least one output file must be specified
 [AVIOContext @ 0xb6cd60] Statistics: 1024 bytes read, 0 seeks
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6208>
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