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Mot : - Tags -/epub

Autres articles (16)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP 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 enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

Sur d’autres sites (4771)

  • Playing H.264 video in an application through ffmpeg using DXVA2 acceleration

    28 avril 2012, par cloudraven

    I am trying to output H.264 video in a Windows application. I am moderately familiar with FFMPEG and I have been successful at getting it to play H.264 in a SDL window without a problem. Still, I would really benefit from using Hardware Acceleration (probably through DXVA2)

    I am reading raw H264 video, no container, no audio ... just raw video (and no B-frames, just I and P). Also, I know that all the systems that will use this applications have Nvidia GPUs supporting at least VP3.
    Given that set of assumptions I was hoping to cut some corners, make it simple instead of general, just have it working for my particular scenario.

    So far I know that I need to set the hardware acceleration in the codec context by filling the hwaccel member through a call to ff_find_hwaccel. My plan is to look at Media Player Classic Home Cinema which does a pretty good job at supporting DXVA2 using FFMPEG when decoding H.264. However, the code is quite large and I am not exactly sure where to look. I can find the place where ff_find_hwaccel is called in h264.c, but I was wondering where else should I be looking at.

    More specifically, I would like to know what is the minimum set of steps that I have to code to get DXVA2 through FFMPEG working ?

    EDIT : I am open to look at VLC or anything else if someone knows where I can find the "important" piece of code that does the trick. I just mentioned MPC-HC because I think it is the easiest to get to compile in Windows.

  • FFmpeg and mencoder

    24 juin 2013, par jesper

    Currently i am making 2 videos with this command :

    ffmpeg -loop 1 -r 25 -t 5 -i /home/psafari/public_html/youtube_images/movie_" . $id . ".jpg -q:v 1 -an /home/psafari/public_html/youtube_videos/".$movie1."
    

    
ffmpeg -loop 1 -r 25 -t ".$t." -i /home/psafari/public_html/yy.jpg -q:v 1 -an /home/psafari/public_html/youtube_videos/".$movie2."

    And it also works, but when i will make 2 videos into 1, it only shows 5 seconds of the first video (like the other doesn't comvert also).

    mencoder -ovc copy -o /home/psafari/public_html/final_".time().".avi /home/psafari/public_html/youtube_videos/".$movie1." /home/psafari/public_html/youtube_videos/".$movie2

    Am i doing something wrong ?

  • Add 2 pictures to video with durations ? [duplicate]

    24 juin 2013, par jesper

    This question already has an answer here :

    I am trying to add 2 different images into a video with ffmpeg.

    image1.jpg should show the first 10 seconds of the movie and youtubeLOL.png should show the next 6 minutes of the video.

    So the command should tell us also to repeat the pictures to get a length for 6 minutes and 10 seconds. How can i do this ? I have tried this :

    (It's not even working)

     passthru("ffmpeg -f image2 -loop 1 -vframes 100 -i /home/psafari/public_html/youtube_images/movie_" . $id . ".jpg -vcodec mpeg4 /home/psafari/public_html/youtube_videos/movie_" . time().".avi");

    Here is output :

    FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers built on Jan 29 2012 17:52:15 with gcc 4.4.5 20110214 (Red Hat 4.4.5-6) 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-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --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 
    

    
Invalid value '1' for option 'loop'

    output memcode

     MEncoder SVN-r31628-4.4.6 (C) 2000-2010 MPlayer Team
    
 get_path("config") problem
    
 success: format: 0  data: 0x0 - 0x1251b
    
 libavformat file format detected.
    
 [lavf] stream 0: video (h264), -vid 0
    
 VIDEO:  [H264]  540x800  24bpp  25.000 fps  116.3 kbps (14.2 kbyte/s)
    
 [V] filefmt:44  fourcc:0x34363248  size:540x800  fps:25.000  ftime:=0.0400
    
 videocodec: framecopy (540x800 24bpp fourcc=34363248)
    
 Writing header...
    
 ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
    
 Writing header...
    
 ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
    
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 success: format: 0  data: 0x0 - 0x9daf8
    
 libavformat file format detected.
    
 [lavf] stream 0: video (h264), -vid 0
    
 VIDEO:  [H264]  640x400  24bpp  25.000 fps   21.8 kbps ( 2.7 kbyte/s)
    
 [V] filefmt:44  fourcc:0x34363248  size:640x400  fps:25.000  ftime:=0.0400
    
 videocodec: framecopy (540x800 24bpp fourcc=34363248)
    
 videocodec: framecopy (640x400 24bpp fourcc=34363248)
    

    
 All video files must have identical fps, resolution, and codec for -ovc copy.
    

    
 Exiting...

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