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Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
Menus personnalisés
14 novembre 2010, parMediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
Menus créés à l’initialisation du site
Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...) -
Librairies et binaires spécifiques au traitement vidéo et sonore
31 janvier 2010, parLes logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
Binaires complémentaires et facultatifs flvtool2 : (...)
Sur d’autres sites (9737)
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Why does ffmpeg output frames starting with 0001 instead of 0000 ? [closed]
3 février 2020, par AMTQI’m using ffmpeg to extract frames from a video. It all works well but something seems strange : The numbering of the output always starts with 0001 instead of 0000. Below a minimum working example, the output from the console and a picture of the generated frames. I’m using windows shell on Win10.
ffmpeg -i P1390752.MP4 -vframes 4 frame%%04d.png
Console output :
C:\Users\xxxx>ffmpeg -i P1390752.MP4 -vframes 4 frame%04d.png
ffmpeg version git-2020-01-15-0dc0837 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20200111
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 38.100 / 56. 38.100
libavcodec 58. 65.103 / 58. 65.103
libavformat 58. 35.102 / 58. 35.102
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 71.100 / 7. 71.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002341f489e40] st: 0 edit list: 1 Missing key frame while searching for timestamp: 3600
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002341f489e40] st: 0 edit list 1 Cannot find an index entry before timestamp: 3600.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'P1390752.MP4':
Metadata:
major_brand : mp42
minor_version : 1
compatible_brands: mp42avc1
creation_time : 2020-01-29T13:35:55.000000Z
Duration: 00:00:08.16, start: 0.000000, bitrate: 27084 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 26830 kb/s, 50 fps, 50 tbr, 180k tbn, 100 tbc (default)
Metadata:
creation_time : 2020-01-29T13:35:55.000000Z
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 124 kb/s (default)
Metadata:
creation_time : 2020-01-29T13:35:55.000000Z
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
Output #0, image2, to 'frame%04d.png':
Metadata:
major_brand : mp42
minor_version : 1
compatible_brands: mp42avc1
encoder : Lavf58.35.102
Stream #0:0(und): Video: png, rgb24, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 50 fps, 50 tbn, 50 tbc (default)
Metadata:
creation_time : 2020-01-29T13:35:55.000000Z
encoder : Lavc58.65.103 png
frame= 4 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.08 bitrate=N/A speed=0.0922x
video:5622kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknownWhat I tried so far :
1) I restricted the output to 4 frames because otherwise it would take ages. But the problem remains the same when I remove the number of frames and extract the whole video. The problem persists when using a starting point with -ss and a duration.
2) When I use jpg as output I get some warnings about depreceated pixel format, but the numbering issue remains.I can not get rid of the first two warnings concerning the keyframe, maybe this is related ?
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Getting "Buffer queue overflow, dropping" while concatenation in ffmpeg
19 août 2020, par Yevhenii MolodtsovI have a python script that generates the FFmpeg command to concatenate the video clips.
Here is the script :


ffmpeg 
 -i /tmp/media/import-2020-Aug-19-Wednesday-08-08-26/temp_eba59811-bb5c-4e36-aa7d-b1731e70432c.mp4 
 -i /tmp/media/import-2020-Aug-19-Wednesday-08-08-26/temp_2a6d7907-7cad-4f38-ae82-4b475546d3e0.mp4 
 -i /tmp/media/import-2020-Aug-19-Wednesday-08-08-26/temp_d7371ecb-01df-4199-951f-336fa475998f.mp4 
 -i /tmp/media/import-2020-Aug-19-Wednesday-08-08-26/temp_cc5de0f1-84b4-47bc-b390-45b5f8711914.mp4 
 -i /tmp/media/import-2020-Aug-19-Wednesday-08-08-26/temp_bf796e0d-135f-40fd-ab8e-4780da6973fd.mp4 
 -filter_complex 
 "[0:v]trim=start=0:end=8.032,setpts=PTS-STARTPTS[clip0];
 [1:v]trim=start=2:end=13.047,setpts=PTS-STARTPTS[clip1];
 [2:v]trim=start=2:end=13.558,setpts=PTS-STARTPTS[clip2];
 [3:v]trim=start=2:end=13.186,setpts=PTS-STARTPTS[clip3];
 [4:v]trim=start=2,setpts=PTS-STARTPTS[clip4];
 [0:v]trim=start=9.032:end=10.032,setpts=PTS-STARTPTS[out0];
 [1:v]trim=start=14.047:end=15.047,setpts=PTS-STARTPTS[out1];
 [2:v]trim=start=14.558:end=15.558,setpts=PTS-STARTPTS[out2];
 [3:v]trim=start=14.186:end=15.186,setpts=PTS-STARTPTS[out3];
 [1:v]trim=start=0:end=2,setpts=PTS-STARTPTS[in1];
 [2:v]trim=start=0:end=2,setpts=PTS-STARTPTS[in2];
 [3:v]trim=start=0:end=2,setpts=PTS-STARTPTS[in3];
 [4:v]trim=start=0:end=2,setpts=PTS-STARTPTS[in4];
 [in1]format=pix_fmts=yuva420p,fade=t=in:st=0:d=2:alpha=1[fadein1];
 [in2]format=pix_fmts=yuva420p,fade=t=in:st=0:d=2:alpha=1[fadein2];
 [in3]format=pix_fmts=yuva420p,fade=t=in:st=0:d=2:alpha=1[fadein3];
 [in4]format=pix_fmts=yuva420p,fade=t=in:st=0:d=2:alpha=1[fadein4];
 [out0]format=pix_fmts=yuva420p,fade=t=out:st=0:d=2:alpha=1[fadeout0];
 [out1]format=pix_fmts=yuva420p,fade=t=out:st=0:d=2:alpha=1[fadeout1];
 [out2]format=pix_fmts=yuva420p,fade=t=out:st=0:d=2:alpha=1[fadeout2];
 [out3]format=pix_fmts=yuva420p,fade=t=out:st=0:d=2:alpha=1[fadeout3];
 [fadein1]fifo[fadein1fifo];
 [fadein2]fifo[fadein2fifo];
 [fadein3]fifo[fadein3fifo];
 [fadein4]fifo[fadein4fifo];
 [fadeout0]fifo[fadeout0fifo];
 [fadeout1]fifo[fadeout1fifo];
 [fadeout2]fifo[fadeout2fifo];
 [fadeout3]fifo[fadeout3fifo];
 [fadeout0fifo][fadein1fifo]overlay[crossfade0];
 [fadeout1fifo][fadein2fifo]overlay[crossfade1];
 [fadeout2fifo][fadein3fifo]overlay[crossfade2];
 [fadeout3fifo][fadein4fifo]overlay[crossfade3];
 [clip0][crossfade0][clip1][crossfade1][clip2][crossfade2][clip3][crossfade3][clip4]concat=n=9[output];
 [0:a][1:a]acrossfade=d=10:c1=tri:c2=tri[A1];
 [A1][2:a]acrossfade=d=10:c1=tri:c2=tri[A2];
 [A2][3:a]acrossfade=d=10:c1=tri:c2=tri[A3];
 [A3][4:a]acrossfade=d=10:c1=tri:c2=tri[audio] " -map "[output]" -map "[audio]" /tmp/media/final/some_filename_587463a2-e3ca-436a-874b-a72e295e46ac.mp4



But I get the following error :
Buffer queue overflow, dropping
.
I read that to solve this I need to use fifo, but I can't figure out where should I place it. I addition, it seems like fifo works only with video streams.
I would much appreciate any help !

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Sound is lost when concatenate several videos with ffmpeg
18 août 2020, par Yevhenii MolodtsovI have a python script that generates an FFmpeg command and then runs it with shell.
Everything is going okay (the videos are concatenated, the needed cross-dissolve effect is also great), but there are two problems I am trying to fix :


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- The output loses the sound.
- The output is frizzing a little bit (it seems like there are about 10 fps).






The example of command generatede by the script is here :


ffmpeg -i /tmp/media/import-2020-Aug-18-Tuesday-08-31-10/temp_8ce3c8ac-
1379-4a16-b141-ebdc910e1142.mp4 -i /tmp/media/import-2020-Aug-18-
Tuesday-08-31-10/temp_d9f60ffb-0a83-4052-8ebb-620a574d1871.mp4 -i 
/tmp/media/import-2020-Aug-18-Tuesday-08-31-10/temp_93934eaa-9589-4736-
8d11-fd8c1bdf0b92.mp4 -filter_complex "
[0:v]trim=start=0:end=4.038,setpts=PTS-STARTPTS[clip0];
[1:v]trim=start=2:end=4.038,setpts=PTS-STARTPTS[clip1];
[2:v]trim=start=2,setpts=PTS-STARTPTS[clip2];
[0:v]trim=start=5.038:end=6.038,setpts=PTS-STARTPTS[out0];
[1:v]trim=start=5.038:end=6.038,setpts=PTS-STARTPTS[out1];
[1:v]trim=start=0:end=2,setpts=PTS-STARTPTS[in1];
[2:v]trim=start=0:end=2,setpts=PTS-STARTPTS[in2];
[in1]format=pix_fmts=yuva420p,fade=t=in:st=0:d=2:alpha=1[fadein1];
[in2]format=pix_fmts=yuva420p,fade=t=in:st=0:d=2:alpha=1[fadein2];
[out0]format=pix_fmts=yuva420p,fade=t=out:st=0:d=2:alpha=1[fadeout0];
[out1]format=pix_fmts=yuva420p,fade=t=out:st=0:d=2:alpha=1[fadeout1];
[fadein1]fifo[fadein1fifo];[fadein2]fifo[fadein2fifo];
[fadeout0]fifo[fadeout0fifo];[fadeout1]fifo[fadeout1fifo];[fadeout0fifo]
[fadein1fifo]overlay[crossfade0];[fadeout1fifo]
[fadein2fifo]overlay[crossfade1];[clip0][crossfade0][clip1][crossfade1]
[clip2]concat=n=5[output]" -map "[output]" 
/tmp/media/final/some_filename_c8e898b2-e3f7-4656-b3b9-1e8fb93cd75c.mp4



I would much appreciate any help because I am new to this tool and here I got stuck.