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Autres articles (54)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
Sur d’autres sites (6332)
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ffmpeg .mp4 to .h264 avcc formatted bitstream
20 juillet 2014, par user2517182I have a .mp4 file. I would like to convert it to an .h264 file of the form of avcc bitstream.
When I run
ffmpeg -i somfile.mp4 -vcodec libx264 somefile.h264
, a .h264 file is produced, but of the form annexb bitstream. I also tried it withlibx264rgb
argument to -vcodec
and got the same result.I ran
ffmpeg -codecs
and the line that I believe applies to my situation isDEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_vda ) (encoders: libx264 libx264rgb )
According to this post and this post (they seem to be highly recommended on stackoverflow), although there are differences between the two bitstreams ; I should be able to produce either one of the bitstreams if the bits are packed correctly.
Any help with this would be greatly appreciated.
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ffmpeg video not working in JWPlayer
20 août 2014, par shailesh guptaI have created a video from mixing an audio and a video. By using
ffmpeg -i video.mp4 -i a.mp3 -vcodec copy -acodec copy -map 0.0 -map 1.0 -shortest output.mp4
Its working fine in VLC player but no sound in JWPlayer. Its also buffering the whole video before starting the video.
How to resolve this issue .Here is output of ffmpeg command.
FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
built on Jan 29 2012 23:55:02 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 -- mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable- libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable- libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 -- enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared -- enable-swscale --enable-vdpau --enable-version3 --enable-x11grab
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
Duration: 00:01:17.48, start: 0.000000, bitrate: 614 kb/s
Stream #0.0(und): Video: h264, yuv420p, 640x360, 515 kb/s, 29.97 fps, 29.97 tbr, 60k tbn, 59.94 tbc
Stream #0.1(und): Audio: aac, 44100 Hz, stereo, s16, 96 kb/s
[mp3 @ 0x1258e440]max_analyze_duration reached
[mp3 @ 0x1258e440]Estimating duration from bitrate, this may be inaccurate
Input #1, mp3, from 'a.mp3':
Metadata:
TSSE : Lavf52.64.2
Duration: 00:06:53.52, start: 0.000000, bitrate: 64 kb/s
Stream #1.0: Audio: mp3, 44100 Hz, 2 channels, s16, 64 kb/s
File 'output.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'output.mp4':
Metadata:
encoder : Lavf52.64.2
Stream #0.0(und): Video: libx264, yuv420p, 640x360, q=2-31, 515 kb/s, 60k tbn, 29.97 tbc
Stream #0.1: Audio: libmp3lame, 44100 Hz, 2 channels, 64 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #1.0 -> #0.1
Press [q] to stop encoding
frame= 2322 fps= 0 q=-1.0 Lsize= 5526kB time=77.48 bitrate= 584.3kbits/s
video:4878kB audio:605kB global headers:0kB muxing overhead 0.777738% -
configure : add —enable-rpath
23 août 2014, par Reinhard Tartlerconfigure : add —enable-rpath
This option facilitates testing shared libarary builds : for instance
fate builders do no longer need to set LD_LIBRARY_PATH as the binaries will
get the right search paths hardcoded into their executable file.This option is only meant to be used for testing purposes : The installed
libraries must not move around in the file system, and doing so will
cause a lot of subtle problems. For more information why using RPATH is
dangerous, please refer to