Opened 2 years ago

Closed 2 years ago

Last modified 2 years ago

#6100 closed defect (fixed)

24bit PCM audio

Reported by: linuxloon Owned by:
Priority: normal Component: avformat
Version: git-master Keywords: avi
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no

Description (last modified by cehoyos)

Summary of the bug: 24bit PCM audio is not recognized.
How to reproduce: trying to process any file from a blackmagic intensity pro 4k

mencoder is able to process the audio and a workaround is to use mencoder to downsample the file to 16bit PCM audio.

ffprobe of file

ffprobe version N-83198-g9ea2998 Copyright (c) 2007-2017 the FFmpeg developers
  built with gcc 6.3.1 (GCC) 20161221 (Red Hat 6.3.1-1)
  configuration: 
  libavutil      55. 44.100 / 55. 44.100
  libavcodec     57. 75.100 / 57. 75.100
  libavformat    57. 63.100 / 57. 63.100
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 69.100 /  6. 69.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
[AVIOContext @ 0x30e1560] unknown subformat:010000000000000000001000800000aa {00000001-0000-0000-0000-1000800000aa}
[avi @ 0x30d8ba0] non-interleaved AVI
[avi @ 0x30d8ba0] Stream #0: not enough frames to estimate rate; consider increasing probesize
[avi @ 0x30d8ba0] Could not find codec parameters for stream 1 (Audio: none, 48000 Hz, 2 channels, 2304 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, avi, from 'Untitled 02.avi':
  Duration: 00:00:19.95, start: 0.000000, bitrate: 1329380 kb/s
    Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p10le, 1920x1080, 1327998 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc
    Stream #0:1: Audio: none, 48000 Hz, 2 channels, 2304 kb/s
Unsupported codec with id 0 for input stream 1
ffmpeg -v 9 -loglevel 99 -i Untitled\ 02.avi outfile.avi
ffmpeg version N-83198-g9ea2998 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.3.1 (GCC) 20161221 (Red Hat 6.3.1-1)
  configuration: 
  libavutil      55. 44.100 / 55. 44.100
  libavcodec     57. 75.100 / 57. 75.100
  libavformat    57. 63.100 / 57. 63.100
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 69.100 /  6. 69.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
Splitting the commandline.
Reading option '-v' ... matched as option 'v' (set logging level) with argument '9'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument '99'.
Reading option '-i' ... matched as input url with argument 'Untitled 02.avi'.
Reading option 'outfile.avi' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option v (set logging level) with argument 9.
Successfully parsed a group of options.
Parsing a group of options: input url Untitled 02.avi.
Successfully parsed a group of options.
Opening an input file: Untitled 02.avi.
[file @ 0x2d7bce0] Setting default whitelist 'file,crypto'
Probing avi score:100 size:2048
[avi @ 0x2d7b3a0] Format avi probed with size=2048 and score=100
[avi @ 0x2d7bd80] use odml:1
pos:14 tag: tag=LIST size=0x20fe0
pos:18 list: tag=hdrl size=0x0
pos:20 tag: tag=avih size=0x38
pos:60 tag: tag=LIST size=0x10074
pos:64 list: tag=strl size=0x0
pos:6C tag: tag=strh size=0x38
pos:74 strh: tag=vids size=0xffffffff
[avi @ 0x2d7b3a0] 30000 1001 5529600
pos:AC tag: tag=strf size=0x28
pos:D4 video: tag=v210 size=0x0
pos:DC tag: tag=indx size=0xfff8
[avi @ 0x2d7b3a0] longs_per_entry:4 index_type:0 entries_in_use:4 chunk_id:62643030 base:               0 frame_num:0
[avi @ 0x2d7b3a0] longs_per_entry:2 index_type:1 entries_in_use:181 chunk_id:62643030 base:               0 frame_num:0
[avi @ 0x2d7b3a0] pos:139256, len:546000
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[avi @ 0x2d7b3a0] longs_per_entry:2 index_type:1 entries_in_use:181 chunk_id:62643030 base:        3B77FFF8 frame_num:181
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[avi @ 0x2d7b3a0] pos:3115945976, len:546000
[avi @ 0x2d7b3a0] pos:3121479672, len:546000
[avi @ 0x2d7b3a0] pos:3127013368, len:546000
[avi @ 0x2d7b3a0] pos:3132547064, len:546000
[avi @ 0x2d7b3a0] pos:3138080760, len:546000
[avi @ 0x2d7b3a0] pos:3143614456, len:546000
[avi @ 0x2d7b3a0] pos:3149148152, len:546000
[avi @ 0x2d7b3a0] pos:3154681848, len:546000
[avi @ 0x2d7b3a0] pos:3160215544, len:546000
[avi @ 0x2d7b3a0] pos:3165749240, len:546000
[avi @ 0x2d7b3a0] pos:3171282936, len:546000
[avi @ 0x2d7b3a0] pos:3176816632, len:546000
[avi @ 0x2d7b3a0] pos:3182350328, len:546000
[avi @ 0x2d7b3a0] pos:3187884024, len:546000
[avi @ 0x2d7b3a0] pos:3193417720, len:546000
[avi @ 0x2d7b3a0] pos:3198951416, len:546000
[avi @ 0x2d7b3a0] pos:3204485112, len:546000
[avi @ 0x2d7b3a0] pos:3210018808, len:546000
[avi @ 0x2d7b3a0] pos:3215552504, len:546000
[avi @ 0x2d7b3a0] pos:3221086200, len:546000
[avi @ 0x2d7b3a0] pos:3226619896, len:546000
[avi @ 0x2d7b3a0] pos:3232153592, len:546000
[avi @ 0x2d7b3a0] pos:3237687288, len:546000
[avi @ 0x2d7b3a0] pos:3243220984, len:546000
[avi @ 0x2d7b3a0] pos:3248754680, len:546000
[avi @ 0x2d7b3a0] pos:3254288376, len:546000
[avi @ 0x2d7b3a0] pos:3259822072, len:546000
[avi @ 0x2d7b3a0] pos:3265658872, len:546000
[avi @ 0x2d7b3a0] pos:3271192568, len:546000
[avi @ 0x2d7b3a0] pos:3276726264, len:546000
[avi @ 0x2d7b3a0] pos:3282259960, len:546000
[avi @ 0x2d7b3a0] pos:3287793656, len:546000
[avi @ 0x2d7b3a0] pos:3293327352, len:546000
[avi @ 0x2d7b3a0] pos:3298861048, len:546000
[avi @ 0x2d7b3a0] pos:3304394744, len:546000
[avi @ 0x2d7b3a0] pos:3309928440, len:546000
pos:100DC tag: tag=LIST size=0x1007c
pos:100E0 list: tag=strl size=0x0
pos:100E8 tag: tag=strh size=0x38
pos:100F0 strh: tag=auds size=0xffffffff
[avi @ 0x2d7b3a0] 48000 1 6
pos:10128 tag: tag=strf size=0x30
[AVIOContext @ 0x2d84000] unknown subformat:010000000000000000001000800000aa {00000001-0000-0000-0000-1000800000aa}
pos:10160 tag: tag=indx size=0xfff8
[avi @ 0x2d7b3a0] longs_per_entry:4 index_type:0 entries_in_use:4 chunk_id:62773130 base:               0 frame_num:0
[avi @ 0x2d7b3a0] longs_per_entry:2 index_type:1 entries_in_use:5 chunk_id:62773130 base:               0 frame_num:0
[avi @ 0x2d7b3a0] pos:171683832, len:48BAC
[avi @ 0x2d7b3a0] pos:343531512, len:48BAC
[avi @ 0x2d7b3a0] pos:515379192, len:48BA6
[avi @ 0x2d7b3a0] pos:687226872, len:48BAC
[avi @ 0x2d7b3a0] pos:859074552, len:48BA6
[avi @ 0x2d7b3a0] longs_per_entry:2 index_type:1 entries_in_use:6 chunk_id:62773130 base:        3B77FFF8 frame_num:248248
[avi @ 0x2d7b3a0] pos:1025531896, len:48BAC
[avi @ 0x2d7b3a0] pos:1202913272, len:48BAC
[avi @ 0x2d7b3a0] pos:1374760952, len:48BA6
[avi @ 0x2d7b3a0] pos:1546608632, len:48BAC
[avi @ 0x2d7b3a0] pos:1718456312, len:48BA6
[avi @ 0x2d7b3a0] pos:1890303992, len:48BAC
[avi @ 0x2d7b3a0] longs_per_entry:2 index_type:1 entries_in_use:6 chunk_id:62773130 base:        77491FF8 frame_num:546146
[avi @ 0x2d7b3a0] pos:2062286840, len:48BAC
[avi @ 0x2d7b3a0] pos:2234134520, len:48BA6
[avi @ 0x2d7b3a0] pos:2405982200, len:48BAC
[avi @ 0x2d7b3a0] pos:2577829880, len:48BA6
[avi @ 0x2d7b3a0] pos:2749677560, len:48BAC
[avi @ 0x2d7b3a0] pos:2921525240, len:48BAC
[avi @ 0x2d7b3a0] longs_per_entry:2 index_type:1 entries_in_use:3 chunk_id:62773130 base:        B31A1FF8 frame_num:844044
[avi @ 0x2d7b3a0] pos:3093508088, len:48BA6
[avi @ 0x2d7b3a0] pos:3265355768, len:48BAC
[avi @ 0x2d7b3a0] pos:3315462136, len:151D4
pos:20160 tag: tag=JUNK size=0xe94
pos:20FFC tag: tag=LIST size=0x3bcc5004
pos:21000 list: tag=movi size=0x0
movi end=3bce6000
[avi @ 0x2d7b3a0] non-interleaved AVI
[avi @ 0x2d7b3a0] Before avformat_find_stream_info() pos: 135168 bytes read:589824 seeks:20 nb_streams:2
[avi @ 0x2d7b3a0] parser not found for codec v210, packets or times may be invalid.
[avi @ 0x2d7b3a0] parser not found for codec none, packets or times may be invalid.
[avi @ 0x2d7b3a0] 0 1001/30000 0
[avi @ 0x2d7b3a0] 0 1/48000 0
[avi @ 0x2d7b3a0] dts:0 offset:0 1001/30000 smpl_siz:0 base:1000000 st:0 size:5529600
[avi @ 0x2d7b3a0] parser not found for codec v210, packets or times may be invalid.
[avi @ 0x2d7b3a0] Probe buffer size limit of 5000000 bytes reached
[avi @ 0x2d7b3a0] Stream #0: not enough frames to estimate rate; consider increasing probesize
[avi @ 0x2d7b3a0] stream 0: start_time: 0.000 duration: 19.953
[avi @ 0x2d7b3a0] stream 1: start_time: 0.000 duration: -192153584101141.156
[avi @ 0x2d7b3a0] format: start_time: 0.000 duration: 19.953 bitrate=1329380 kb/s
[avi @ 0x2d7b3a0] Could not find codec parameters for stream 1 (Audio: none, 48000 Hz, 2 channels, 2304 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[avi @ 0x2d7b3a0] After avformat_find_stream_info() pos: 5668864 bytes read:6123520 seeks:20 frames:1
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, avi, from 'Untitled 02.avi':
  Duration: 00:00:19.95, start: 0.000000, bitrate: 1329380 kb/s
    Stream #0:0, 1, 1001/30000: Video: v210, 1 reference frame (v210 / 0x30313276), yuv422p10le, 1920x1080, 0/1, 1327998 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc
    Stream #0:1, 0, 1/48000: Audio: none, 48000 Hz, stereo, 2304 kb/s
Successfully opened the file.
Parsing a group of options: output url outfile.avi.
Successfully parsed a group of options.
Opening an output file: outfile.avi.
File 'outfile.avi' already exists. Overwrite ? [y/N] y
[file @ 0x2d92140] Setting default whitelist 'file,crypto'
Successfully opened the file.
Initializing cuvid transcoding
    Last message repeated 1 times
Stream mapping:
  Stream #0:0 -> #0:0 (v210 (native) -> mpeg4 (native))
  Stream #0:1 -> #0:1 (? (?) -> ac3 (native))
Decoder (codec none) not found for input stream #0:1
[AVIOContext @ 0x2d9b040] Statistics: 0 seeks, 0 writeouts
[AVIOContext @ 0x2d84000] Statistics: 6123520 bytes read, 20 seeks

Attachments (1)

Short-PCM_S24LE.avi (756.5 KB) - added by linuxloon 2 years ago.
PCM-24bit Audio

Download all attachments as: .zip

Change History (6)

comment:1 Changed 2 years ago by cehoyos

  • Description modified (diff)
  • Keywords avi added

Did you upload a sample?

For future tickets: The console output of ffmpeg is sufficient.

comment:2 Changed 2 years ago by richardpl

  • Resolution set to wontfix
  • Status changed from new to closed

Changed 2 years ago by linuxloon

PCM-24bit Audio

comment:3 Changed 2 years ago by linuxloon

see the ticket is closed now. I did attach a sample file. The file will encode with mencoder to down sample the file to 16bit PCM

mencoder infile-24bitpcm.avi -oac pcm ovc copy -o outfile-16bitpcm.avi
once the audio is converted to 16 bit PCM it is seen by ffmpeg.

comment:4 Changed 2 years ago by linuxloon

it was an issue with the source, latest blackmagic software is generating 24bit PCM audio that is recognized correctly by ffmpeg.

comment:5 Changed 2 years ago by cehoyos

  • Component changed from undetermined to avformat
  • Reproduced by developer set
  • Resolution changed from wontfix to fixed
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