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    This page lists some websites based on MediaSPIP.

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    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
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Sur d’autres sites (9702)

  • How can I reencode a video to match another's codec exactly ?

    24 janvier 2020, par Stephen Schrauger

    When I’m on vacation, I usually use our camcorder to record videos. Since they’re all the same format, I can use ffmpeg to concat them into one large, smooth video without re-encoding.

    However, sometimes I will use a phone or other camera to record a video (if the camcorder ran out of space/battery or was left at a hotel).

    I’d like to determine the codec, framerate, etc used by my camcorder and use those parameters to convert the phone vidoes into the same format. That way, I will be able to concatonate all the videos without re-encoding the camcorder videos.

    Using ffprobe, I found my camcorder has this encoding :

      Input #0, mpegts, from 'camcorderfile.MTS':
    
  Duration: 00:00:09.54, start: 1.936367, bitrate: 24761 kb/s
    
  Program 1 
    
    Stream #0:0[0x1011]: Video: h264 (High) (HDPR / 0x52504448), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
    
    Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 256 kb/s
    
    Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080

    The phone (iPhone 5s) encoding is :

      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov.MOV':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 0
    
    compatible_brands: qt  
    
    creation_time   : 2017-01-02T03:04:05.000000Z
    
    com.apple.quicktime.location.ISO6709: +12.3456-789.0123+456.789/
    
    com.apple.quicktime.make: Apple
    
    com.apple.quicktime.model: iPhone 5s
    
    com.apple.quicktime.software: 10.2.1
    
    com.apple.quicktime.creationdate: 2017-01-02T03:04:05-0700
    
  Duration: 00:00:14.38, start: 0.000000, bitrate: 11940 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 11865 kb/s, 29.98 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
    
    Metadata:
    
      creation_time   : 2017-01-02T03:04:05.000000Z
    
      handler_name    : Core Media Data Handler
    
      encoder         : H.264
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
    
    Metadata:
    
      creation_time   : 2017-01-02T03:04:05.000000Z
    
      handler_name    : Core Media Data Handler
    
    Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    
    Metadata:
    
      creation_time   : 2017-01-02T03:04:05.000000Z
    
      handler_name    : Core Media Data Handler
    
    Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    
    Metadata:
    
      creation_time   : 2017-01-02T03:04:05.000000Z
    
      handler_name    : Core Media Data Handler

    I’m presuming that ffmpeg will automatically take any acceptable video format, and that I only need to figure out the output settings. I think I need to use -s 1920x1080 and -pix_fmt yuv420p for the output, but what other flags do I need in order to make the phone video into the same encoding as the camcorder video ?

    Can I get some pointers as to how I can translate the ffprobe output into the flags I need to give to ffmpeg ?

    Edit : Added the entire Input #0 for both media files.

  • avformat/mov : Add support for reading and exporting horizontal field of view

    30 mai 2024, par Derek Buitenhuis
    avformat/mov : Add support for reading and exporting horizontal field of view

    These boxes are created by the Apple Vision Pro and the iPhone 15+ when
    
capture for the Vision Pro is enabled.
    

    Based off of the swift API :
    
  * https://developer.apple.com/documentation/coremedia/kcmformatdescriptionextension_horizontalfieldofview
    

    Signed-off-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
    • [DH] libavformat/mov.c

  • Compile ffmpeg with libfaac for armv7

    25 juillet 2013, par user2617213

    how can I compile ffmpeg with libfaac for armv7 ?
    I want to use libfaac.a for iPhone ,but how to compile ffmpeg with libfaac ?

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