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Autres articles (60)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • 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 (...)

Sur d’autres sites (4635)

  • ffmpeg conversion to mpeg2video

    19 novembre 2013, par spicyramen

    Need to play some video files from a Cisco DMP, and need to use mpeg2video for video and mp2 for audio.

    Im using ffmpeg -i to verify video format.

    This video plays correctly :

    Input #0, mpeg, from 'ATT_Telepresence_Scheduling.mpg':
    
  Duration: 00:07:14.08, start: 0.522456, bitrate: 474 kb/s
    
    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 600x340 [SAR 1:1 DAR 30:17], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 128 kb/s

    This video does not play(Black screen) :

    Input #0, mpegts, from 'Telepresence_part2.ts':
    
Duration: 00:02:32.83, start: 1.000000, bitrate: 8783 kb/s
    
Program 1 
    
Stream #0:0[0x45]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 163 kb/s
    
Stream #0:1[0x44]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 29.92 fps, 29.92 tbr, 90k tbn, 59.82 tbc

    How to perform the conversion to mpeg and to video mpeg2video and audio mp2 and preserve HD quality ?

  • Why UDP port fails only in Docker ?

    11 juillet 2019, par Sagi Mann

    I’ve got the following docker that streams out some sample sine wav via UDP port 1234 :

    from ubuntu
    
RUN apt update
    
RUN apt install -y ffmpeg
    
EXPOSE 1234/udp
    
CMD ffmpeg -re -f lavfi -i aevalsrc="sin(400*2*PI*t)" -ar 8000 -f mulaw -f rtp rtp://localhost:1234

    I run the container using :

    docker run -p 127.0.0.1:1234:1234/udp xxxx

    Now I try to open VLC and play that stream from my host machine using the stream URL rtp ://@:1234 as instructed by VLC. It plays nothing. Silence. However, if I run the same ffmpeg cmd from the host machine, it works and I can hear the sample.

    Any ideas what’s going on ?

  • FFmpeg - create keyframes exactly each 25 frames

    1er octobre 2019, par Vlad Sineok

    So lately I have been using FFmpeg to convert videos to VP8 format for a Nintendo Wii game. There’s a problem I’ve ran into - the game plays the videos smoothly when there’s exactly 1 keyframe per second (the videos are at 25 fps). But some videos rendered with FFmpeg don’t have an exact gap of 25 frames between them (checked this with libwebm - if there are cues at 15.062 or something like that - the videos stutter, otherwise everything plays fine). So the question is : how do I force the keyframes to be generated exactly each 25 frames ? (The -g parameter doesn’t work)

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