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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
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Sur d’autres sites (9316)
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Can't list input devices ffmpeg linux
23 juillet 2021, par spindi598On windows I could do something like this to list input devices :


ffmpeg -list_devices true -f dshow -i dummy


On Linux I try doing something like this :


ffmpeg -list_devices true -f <x11grab></x11grab>avfoundation>


And I get an error (I have also tried the latest git build from here) :


ffmpeg version n4.2.4 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.1.0 (GCC)
 configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
Unrecognized option 'list_devices'.
Error splitting the argument list: Option not found


How can I list my input devices ?


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FFMPEG creates an empty gif when the start time (-ss) of the video is over 9 seconds ?
30 décembre 2020, par blablubla12I'm running this command in node.js


function CreateGif() {
 return new Promise((resolve, reject) => {
 const ffmpeg = spawn(ffmpegPath, [
 '-ss',
 '00:00:10.000',
 '-i',
 target,
 '-i',
 overlayTarget,
 '-filter_complex',
 `[0:v]trim=duration=5,setpts=PTS-STARTPTS,scale=450:-1[trimmed];[trimmed]split[trimmed1][trimmed2];[trimmed2]reverse[rev];[trimmed1][rev]concat=n=2:v=1:a=0[v];[v][1:v]overlay=0:0:format=rgb[overlayed];[overlayed]split[a][b];[a]palettegen=stats_mode=diff[palette];[b][palette]paletteuse=bayer:bayer_scale=3.5[out]`,
 '-map',
 '[out]',
 '-y',
 tempPath
 ]);

 ffmpeg.stderr.setEncoding('utf8');
 ffmpeg.stderr.on('data', (data) => {
 console.log(data);
 });

 ffmpeg.on('close', function (code) {
 console.log('closed');
 resolve();
 });

 ffmpeg.on('error', function (err) {
 console.log(err);
 reject();
 throw new Error(err);
 });
 });
 }


If the start time
-ssis00:00:09.000or anything less than 10 seconds, then it creates the correct gif. However if I put00:00:10.000or anything above, it creates an empty gif (0 bytes). The same command works when I run it through cmd. FFMPEG version isffmpeg version N-55112-g7eb9cf593e-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2020

Note : The video (defined as
targetin the code) is 1:30 min long andoverlayTargetis a png image.

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ffmpeg is failed to concatanate two different resolution videos [duplicate]
25 octobre 2020, par Ramesh JangamaI am trying to cancatanate two differen resolution videos. I am getting below error which I am getting confused. However same command is working fine if I give same input file twice for concatation.


command :


ffmpeg -i C:\Users\oem\Downloads\FFMpeg_practice\test4.mp4 -i C:\Users\oem\Downloads\FFMpeg_practice\test_out3.mp4 -y -filter_complex "[0:v] scale=iw/2:ih/2 [v0];[1:v] scale=iw/2:ih/2 [v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1 [v][a]" -preset superfast -crf 30 -ab 64k -map [v] -map [a] C:\Users\oem\Downloads\FFMpeg_practice\diffmerge.mp4


error :


Stream specifier ':a' in filtergraph description [0:v] scale=iw/2:ih/2 [v0];[1:v] scale=iw/2:ih/2 [v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1 [v][a] matches no streams.


output :


C:\ffmpeg\bin>ffmpeg -i C:\Users\oem\Downloads\FFMpeg_practice\test4.mp4 -i C:\Users\oem\Downloads\FFMpeg_practice\test_out3.mp4 -y -filter_complex "[0:v] scale=iw/2:ih/2 [v0];[1:v] scale=iw/2:ih/2 [v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1 [v][a]" -preset superfast -crf 30 -ab 64k -map [v] -map [a] C:\Users\oem\Downloads\FFMpeg_practice\diffmerge.mp4
ffmpeg version 2020-10-07-git-a086b73e1f-full_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.2.0 (Rev3, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 56. 60.100 / 56. 60.100
 libavcodec 58.109.100 / 58.109.100
 libavformat 58. 61.100 / 58. 61.100
 libavdevice 58. 11.102 / 58. 11.102
 libavfilter 7. 87.100 / 7. 87.100
 libswscale 5. 8.100 / 5. 8.100
 libswresample 3. 8.100 / 3. 8.100
 libpostproc 55. 8.100 / 55. 8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\oem\Downloads\FFMpeg_practice\test4.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.61.100
 location-eng : +51.5831-000.3438/
 location : +51.5831-000.3438/
 Duration: 00:00:39.50, start: 0.000000, bitrate: 1439 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 540x960, 1304 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\oem\Downloads\FFMpeg_practice\test_out3.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.61.100
 comment : vid:v09044820000brrhju8biap950rr41k0
 Duration: 00:00:30.73, start: 0.000000, bitrate: 1287 kb/s
 Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 288x512 [SAR 1:1 DAR 9:16], 281 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #1:1(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 288x512 [SAR 1:1 DAR 9:16], 243 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
 Metadata:
 handler_name : VideoHandler
 Stream #1:2(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 576x1024 [SAR 1:1 DAR 9:16], 1018 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
 Metadata:
 handler_name : VideoHandler
Stream specifier ':a' in filtergraph description [0:v] scale=iw/2:ih/2 [v0];[1:v] scale=iw/2:ih/2 [v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1 [v][a] matches no streams.


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