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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 (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (5033)
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Missing audio and problems playing FLV video converted from 720p .mov file with FFMPEG
18 novembre 2011, par undefinedI have some .mov video files recorded from a JVC GC-FM1 HD video camera in 720p mode. I have FFMPEG running on a Linux box that I upload files to for encoding into FLV format. The video appears to be encoding ok, but there is no audio in the resulting FLV file. Also, when I play it back in Flash Player, in a browser or on Adobe Media Player, the video pauses at the start. It appears that Adobe Media Player waits for the progress bar to reach the end of the video before starting the playback - i.e. the video will load, the picture pauses, the progress bar seeks to the end as if the video were playing, then when it reaches the end the video picture starts. There is no audio on the video. I am noticing this in the video player I have built with Flash 8 using an FLVPlayback component and attached seekBar. The seek bar will start moving as if the video is playing but the picture remains paused.
Here are some outputs from my FFMPEG log and the command I am using to encode the video.
My FFMPEG command called from PHP :
$cmd = 'ffmpeg -i ' . $sourcelocation.$filename.".".$fileext . ' -ab 96k -b 700k \
-ar 44100 -s ' . $target['width'] . 'x' . $target['height'] . ' -ac 1 \
-acodec libfaac ' . $destlocation.$filename.$ext_trans .' 2>&1';The output from my error log :
FFmpeg version UNKNOWN, Copyright (c) 2000-2010 Fabrice Bellard, et al.
built on Jan 22 2010 11:31:03 with gcc 4.1.2 20070925 (Red Hat 4.1.2-33)
configuration: --prefix=/usr --enable-static --enable-shared --enable-gpl \
--enable-nonfree --enable-postproc --enable-avfilter --enable-avfilter-lavf \
--enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm \
--enable-libmp3lame --enable-libvorbis --enable-libx264
libavutil 50. 7. 0 / 50. 7. 0
libavcodec 52.48. 0 / 52.48. 0
libavformat 52.47. 0 / 52.47. 0
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.17. 0 / 1.17. 0
libswscale 0. 9. 0 / 0. 9. 0
libpostproc 51. 2. 0 / 51. 2. 0
Seems stream 0 codec frame rate differs from container frame rate: 119.88 (120000/1001) -> 59.94 (60000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'uploads/video/60974_v1.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
comment : JVC GC-FM1
comment-eng : JVC GC-FM1
Duration: 00:00:30.41, start: 0.000000, bitrate: 4158 kb/s
Stream #0.0(eng): Video: h264, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 4017 kb/s, 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 128 kb/s
Output #0, rawvideo, to 'uploads/video/60974_v1.jpg':
Stream #0.0(eng): Video: mjpeg, yuvj420p, 320x240 [PAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 59.94 tbc
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
[h264 @ 0x8e67930]B picture before any references, skipping
[h264 @ 0x8e67930]decode_slice_header error
[h264 @ 0x8e67930]no frame!
Error while decoding stream #0.0
[h264 @ 0x8e67930]B picture before any references, skipping
[h264 @ 0x8e67930]decode_slice_header error
[h264 @ 0x8e67930]no frame!
Error while decoding stream #0.0
frame= 1 fps= 0 q=3.8 Lsize= 15kB time=0.02 bitrate=7271.4kbits/s dup=482 drop=0
video:15kB audio:0kB global headers:0kB muxing overhead 0.000000%Which are the important errors here ?
B picture before any references, skipping ?
decode_slice_header error ?
no frame ?
or
Seems stream 0 codec frame rate differs from container frame rate : 119.88 (120000/1001) -> 59.94 (60000/1001) -
Split video file from 'n' th frame to end of video in Linux
17 novembre 2011, par SkkardI need to split a video file using frames as the measure, e.g. I need to save the part of the video from the 34th frame to the end of the video in Linux( specifically fedora 16, xfce, 64bit ).
I've tried using ffmpeg, using the '-vframes' option to specify how many frames to save, but it starts from the beginning, so is not that useful. How can I start from a certain frame in between the video and save the video from there to the end in a new file.
I know about the '-ss' option, but while converting number of frames to the specified time, there might be errors( or so I believe. Please correct me if I'm wrong ) due to rounding.
Could you please suggest a method ? Thanks !
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Revision 6322 : Par défaut on a des controles sur la vidéo
10 février 2012, par kent1 — LogPar défaut on a des controles sur la vidéo