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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (100)
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Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
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Des sites réalisés avec MediaSPIP
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Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
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Sur d’autres sites (11508)
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Remove error when running ffmpeg in Windows script
3 septembre 2021, par K7AAYI use a script to downsize audiobook files.

The original audiobook file was concatenated from multiple MP3 files into one MP3 file.

The script (in Windows) relies on ffmpeg (version git-2020-06-26-7447045) and contains

FOR %%A IN (dir *.mp3) DO ffmpeg -i "%%A" -c:a libmp3lame -q:a 8 "_%%A"


However, this error message appears :




deprecated pixel format used, make sure you did set range correctly

[mp3 @ 000001f026d56400] Frame rate very high for a muxer not efficiently supporting it.

Please consider specifying a lower framerate, a different muxer or -vsync 2



How do I modify the script for greater efficiency and remove that error message ? TY.


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How to add current UTC Time in MKV file metadata using ffmpeg ?
1er mai 2022, par ShahpariI am not sure if it's possible, but is there anyway we can add current UTC time inside the mkv metatag using ffmpeg ? i read https://wiki.multimedia.cx/index.php?title=FFmpeg_Metadata but i could not find anything.


-metadata "Creation Time"="Need to add time tag/code"



output will show


Creation Time: UTC 2020-06-04 02:40:29



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ffmpeg HE-AAC 'unsupported codec' despite being compiled with support
12 mai 2020, par SebastianLack of default support of AAC for ffmpeg is really annoying :



My ffmpeg version :



ffmpeg version git-2020-05-02-0d81edc Copyright (c) 2000-2020 the FFmpeg developers
 built with Apple clang version 11.0.0 (clang-1100.0.33.17)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD-0d81edc_1 --enable-shared --cc=clang --host-cflags=-fno-stack-check --host-ldflags= --enable-gpl --enable-libaom --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --disable-libjack --disable-indev=jack --enable-opencl --enable-videotoolbox --disable-htmlpages --enable-libbluray --enable-libfdk-aac --enable-libopenh264 --enable-libopenjpeg --enable-librsvg --enable-libspeex --enable-libsrt --enable-libtwolame --enable-libwavpack --enable-libwebp --enable-libxvid --enable-nonfree --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb




I have several segment.ts files in
edit.txt
and I try to concatenate and convert to mpg :
ffmpeg -f concat -i edit.txt -c copy output.mpg



this does not work



Input #0, concat, from 'edit.txt':
 Duration: N/A, start: 0.000000, bitrate: 121 kb/s
 Stream #0:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720, 30 fps, 29.97 tbr, 90k tbn, 60 tbc
 Stream #0:1: Audio: aac (HE-AAC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 121 kb/s
File 'output.mpg' already exists. Overwrite? [y/N] y
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (aac (native) -> aac (libfdk_aac))
Press [q] to stop, [?] for help
[mpeg @ 0x7f8e44807e00] VBV buffer size not set, using default size of 230KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
[mpeg @ 0x7f8e44807e00] Unsupported audio codec. Must be one of mp1, mp2, mp3, 16-bit pcm_dvd, pcm_s16be, ac3 or dts.
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:1 --
Conversion failed!




so I tried with
ffmpeg -f concat -i edit.txt -c:v copy -c:a libfdk_aac output.mpg
-> same effect.


Why fraunhoffer codec exists and is mentioned on FFMPEG site if it is not supported ?
Is it any way to do this ?