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Autres articles (46)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les 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 (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (5496)

  • FFMPEG and libx264, WMP and QT playback at different res/aspect than specified

    10 septembre 2013, par Foltz

    So, for a little context. I'm trying to convert a JPEG2000 in .mxf video to an h264 in .mp4, maintaining its resolution/frame-size/aspect ratio. I'll say up front I'm not 100% sure on how all these ratios tie together.

    So, my input file is 720x486. I have a sample h264 file with specs I'm trying to emulate (from an OpenCube video ingest machine) with ffmpeg. The OpenCube file plays back at 720x486 in both Quick Time 7 and Windows Media Player 12. It reports a PAR of 9:10 and DAR of 4:3 (Using VideoSpec to see these values).

    When I make my derivative h264 using ffmpeg I can run the command :

    ffmpeg -i lac-test.mxf -vcodec libx264 -s 720x486 -aspect 4:3 -b:v 2500000 -pix_fmt yuv420p -coder 0 -acodec libfaac -b:a 256000 lac-test.mp4

    The output file reports the correct values in VideoSpec (720x486, DAR 4:3, PAR 9:10), but plays back in QT at 648x486. Weirder, the video plays back at the proper resolution (that is, same size as the sample OpenCube file).

    Now, an alternative command creates yet another predicament :

    ffmpeg -i lac-test.mxf -vcodec libx264 -s 720x486 -b:v 2500000 -pix_fmt yuv420p -coder 0 -acodec libfaac -b:a 256000 lac-test.mp4

    So omitting the aspect ratio gives me an output file that plays at 720x486 in QT7 (good !) but reports a DAR of 1.481 and an Undefine PAR. Unfortunately, THIS file plays back slightly too wide in WMP12.

    I've tried a slew of different strings to try and get something that plays back correctly. I've tried using various filters with the -fv flag such as :

    ffmpeg -i lac-test.mxf -vcodec libx264 -vf "scale=720x486,setsar=9:10,setdar=4:3" -b:v 2500000 -pix_fmt yuv420p -coder 0 -acodec libfaac -b:a 256000 lac-test.mp4

    This results in a video that shows all the correct specs in VideoSpec, and plays back correctly in WMP12 (same size as OpenCube file), but still plays back at 648x486 in QT7.

    What gives ?

  • Create 20 seconds video from 600 png images in FFMPEG

    6 novembre 2016, par Khawaja Muhammad SadeedUllah

    I want to Create a 20 seconds video from 600 png images in FFMPEG.

    The issue is , it creates a 20 seconds video BUT , the 600 frames are about used 10 times and repeats very fast about more than 10 times in 20 seconds.

    I’m using :

    ffmpeg -framerate 30000/1001 -i  

    Please Help ! Thanks in advance

  • ffmpeg, lampp and phpvideotoolkit sequence ? ubuntu 11.10 desktop

    27 octobre 2011, par Toby

    Hello i am very new to owning a server and all. but im up for it.

    so what i want is ultimately to let a youtube clone cms run on my 'home-server' i know i need ffmpeg, ffmpeg-php lampp and phpvideotoolkit(optional) but what is the most effecient way to installing all these packages ?

    and could you give me the commands for them ? i also heard it is possible to download all these from synaptic package manager ? what packages should i be getting then ? I already tried this 4 times and ended up in screwing up my ubuntu resulting in formatting it 4 times...

    again i am really noob in this but if you could help me that would be so freeking awesome !
    (running ubuntu 11.10 desktop)

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