[FFmpeg-trac] #7262(undetermined:new): ffmpeg automatically add "handler_name" to track metadata
FFmpeg
trac at avcodec.org
Sun Jun 17 13:56:17 EEST 2018
#7262: ffmpeg automatically add "handler_name" to track metadata
--------------------------------------+----------------------------------
Reporter: joshuaavalon | Type: defect
Status: new | Priority: normal
Component: undetermined | Version: 3.4
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------------+----------------------------------
Summary of the bug:
Inputting a mp4 without handler_name and does not specify it in the
command, ffmpeg add "handler_name" not matter what.
In the log below, video track and audio track of 1.mp4 `creation_time` in
their metadata and `-map_metadata -1` should remove all metadata. However,
"handler_name" was added to 2.mp4 by ffmpeg.
How to reproduce:
{{{
% ffmpeg -i in.mp4 -map_metadata -1 -codec copy out.mp4
ffmpeg version 3.4
built with gcc 6.4.0 (Alpine 6.4.0)
}}}
Log:
{{{
$ ffmpeg -i 1.mp4 -map_metadata -1 -codec copy 2.mp4
ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 6.4.0 (Alpine 6.4.0)
configuration: --prefix=/usr --enable-avresample --enable-avfilter
--enable-gnutls --enable-gpl --enable-libmp3lame --enable-librtmp
--enable-libvorbis --enable-libvpx --enable-libxvid --enable-libx264
--enable-libx265 --enable-libtheora --enable-libv4l2 --enable-postproc
--enable-pic --enable-pthreads --enable-shared --enable-libxcb --disable-
stripping --disable-static --enable-vaapi --enable-vdpau --enable-libopus
--disable-debug
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isomavc1
creation_time : 2018-06-16T17:18:50.000000Z
Duration: 00:24:00.04, start: 0.000000, bitrate: 1549 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1280x720, 1341 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc
(default)
Metadata:
creation_time : 2018-06-16T17:18:50.000000Z
Stream #0:1(jpn): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 204 kb/s (default)
Metadata:
creation_time : 2018-06-16T17:11:42.000000Z
Output #0, mp4, to '2.mp4':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1280x720, q=2-31, 1341 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k
tbc (default)
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 204 kb/s (default)
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=34525 fps=30679 q=-1.0 Lsize= 272712kB time=00:24:00.02
bitrate=1551.4kbits/s speed=1.28e+03x
video:235787kB audio:35953kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.357371%
}}}
{{{
$ffmpeg -i 2.mp4 -map_metadata -1 -codec copy 3.mp4
ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 6.4.0 (Alpine 6.4.0)
configuration: --prefix=/usr --enable-avresample --enable-avfilter
--enable-gnutls --enable-gpl --enable-libmp3lame --enable-librtmp
--enable-libvorbis --enable-libvpx --enable-libxvid --enable-libx264
--enable-libx265 --enable-libtheora --enable-libv4l2 --enable-postproc
--enable-pic --enable-pthreads --enable-shared --enable-libxcb --disable-
stripping --disable-static --enable-vaapi --enable-vdpau --enable-libopus
--disable-debug
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Duration: 00:24:00.04, start: 0.000000, bitrate: 1551 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1280x720, 1341 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc
(default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 204 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, mp4, to '3.mp4':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1280x720, q=2-31, 1341 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k
tbc (default)
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 204 kb/s (default)
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=34525 fps=26192 q=-1.0 Lsize= 272712kB time=00:24:00.02
bitrate=1551.4kbits/s speed=1.09e+03x
video:235787kB audio:35953kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.357374%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7262>
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