[FFmpeg-trac] #3623(undetermined:closed): Mixed results writing M4A metadata

[FFmpeg]

#3623: Mixed results writing M4A metadata
-------------------------------------+-------------------------------------
             Reporter:  svnpenn      |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  mov          |               Resolution:
  metadata                           |  needs_more_info
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by svnpenn):

 {{{
 ffmpeg started on 2014-05-09 at 02:28:01
 Report written to "ffmpeg-20140509-022801.log"
 Command line:
 "C:\\ffmpeg.exe" -i confetti.mp4 -c copy -vn -movflags faststart -metadata
 "title=Confetti" -report confetti.m4a
 ffmpeg version git-2014-01-22-94a5241 Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Jan 21 2014 19:33:07 with gcc 4.8.2 (GCC)
   configuration: --enable-gpl --disable-doc --enable-nonfree --enable-
 libx264 --enable-libfdk-aac --arch=x86_64 --target-os=mingw32
 --logfile=/dev/stdout --extra-ldflags=-static --cross-
 prefix=x86_64-w64-mingw32-
   libavutil      52. 63.100 / 52. 63.100
   libavcodec     55. 48.102 / 55. 48.102
   libavformat    55. 25.101 / 55. 25.101
   libavdevice    55.  5.102 / 55.  5.102
   libavfilter     4.  1.100 /  4.  1.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Splitting the commandline.
 Reading option '-i' ... matched as input file with argument
 'confetti.mp4'.
 Reading option '-c' ... matched as option 'c' (codec name) with argument
 'copy'.
 Reading option '-vn' ... matched as option 'vn' (disable video) with
 argument '1'.
 Reading option '-movflags' ... matched as AVOption 'movflags' with
 argument 'faststart'.
 Reading option '-metadata' ... matched as option 'metadata' (add metadata)
 with argument 'title=Confetti'.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Reading option 'confetti.m4a' ... matched as output file.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option report (generate a report) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input file confetti.mp4.
 Successfully parsed a group of options.
 Opening an input file: confetti.mp4.
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0000000001846c60] Format
 mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0000000001846c60] ISO: File Type Major Brand:
 isom
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0000000001846c60] Before
 avformat_find_stream_info() pos: 2055829 bytes read:39809 seeks:1
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0000000001846c60] All info found
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0000000001846c60] After
 avformat_find_stream_info() pos: 819 bytes read:72577 seeks:2 frames:2
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'confetti.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf55.25.101
   Duration: 00:00:10.01, start: 0.000000, bitrate: 1643 kb/s
     Stream #0:0(und), 1, 1/24000: Video: h264 (High) (avc1 / 0x31637661),
 yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1444 kb/s, 23.98 fps, 23.98 tbr, 24k
 tbn, 47.95 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und), 1, 1/44100: Audio: aac (mp4a / 0x6134706D), 44100
 Hz, stereo, fltp, 192 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Successfully opened the file.
 Parsing a group of options: output file confetti.m4a.
 Applying option c (codec name) with argument copy.
 Applying option vn (disable video) with argument 1.
 Applying option metadata (add metadata) with argument title=Confetti.
 Successfully parsed a group of options.
 Opening an output file: confetti.m4a.
 Successfully opened the file.
 Output #0, ipod, to 'confetti.m4a':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     title           : Confetti
     encoder         : Lavf55.25.101
     Stream #0:0(und), 0, 1/44100: Audio: aac (mp4a / 0x6134706D), 44100
 Hz, stereo, 192 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:1 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 No more output streams to write to, finishing.
 [ipod @ 000000000418f6c0] Starting second pass: moving the moov atom to
 the beginning of the file
 [AVIOContext @ 0000000001859ae0] Statistics: 240981 bytes read, 0 seeks
 size=     238kB time=00:00:10.00 bitrate= 194.6kbits/s

 video:0kB audio:235kB subtitle:0 global headers:0kB muxing overhead
 1.040919%
 0 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 00000000018cfc60] Statistics: 32 seeks, 462 writeouts
 [AVIOContext @ 000000000198fbc0] Statistics: 1856308 bytes read, 33 seeks
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/3623#comment:7>
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