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  • 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 (...)

  • Les images

    15 mai 2013

  • Taille des images et des logos définissables

    9 février 2011, par

    Dans beaucoup d’endroits du site, logos et images sont redimensionnées pour correspondre aux emplacements définis par les thèmes. L’ensemble des ces tailles pouvant changer d’un thème à un autre peuvent être définies directement dans le thème et éviter ainsi à l’utilisateur de devoir les configurer manuellement après avoir changé l’apparence de son site.
    Ces tailles d’images sont également disponibles dans la configuration spécifique de MediaSPIP Core. La taille maximale du logo du site en pixels, on permet (...)

Sur d’autres sites (13121)

  • ffprobe "Could not seek to position" when using -read_intervals parameter [closed]

    9 novembre 2024, par GiulioT

    I'm trying to extract lavfi stats from an mp4 video by using a command like :

    


    ffprobe -read_intervals 5%6 -f lavfi -i "movie=test_video.mp4,signalstats" -show_frames -print_format json

    


    It works on OSX (ffprobe version N-117609-g6cf4186d1b-tessus), but when I try to do it on Ubutu 22.04 (with ffprobe version 6.1-static or ffprobe version 4.4.2-0ubuntu0.22.04.1), I always get an error :

    


    Could not seek to position 5000000: Invalid argument Could not read packets in interval id:0 start:5 end:6

    


    It works if I only specify the end of the interval.

    


    I tried several mp4 files.
It seems like the function avformat_seek_file always returns a negative number, no matter what the syntax of the time is used (00:00:05%6, 5%6, 0%6).
It works if no start time is specified (i.e. %5).

    


    Any clue what the problem could be ?

    


    Thank you

    


  • ffmpeg on the fly switch video from rtsp stream

    31 juillet 2021, par John Williamson

    I have a nest doorbell which provides a video stream via rtsp but for security the url is valid for just 4 minutes at which point a new url is provided i.e.

    


    15:25 - rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/CiQA2.....
15:29 - rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/vY8pB.....


    


    I'm able to play the individual streams to a rtsp-simple-server using

    


    ffmpeg -nostdin  -i  rtsps://stream-eu1-delta.dropcam.com:443/sdm_live_stream/CiQA2.... -q:v 1 -f rtsp rtsp://localhost:8554/live


    


    But is there any way to switch to the latest url on the fly ? I've looked at ffmpeg concate but this requires files. I don't really care about freezing or black between the switching, only that the output stream should remain open.

    


    ffmpeg version 4.2.4-1ubuntu0.1 running on Ubuntu 20.04.2 LTS

    


  • FFmpeg : Pipe segments to s3

    24 septembre 2024, par Brendan Kennedy

    I'd like to pipe ffmpeg segments to s3 without writing them to disk.

    


    ffmpeg -i t2.mp4 -map 0 -c copy -f segment -segment_time 20 output_%04d.mkv


    


    Is it possible to modify this command so that ffmpeg writes segments to an s3 bucket ? Something like this perhaps ?

    


    ffmpeg -i t2.mp4 -map 0 -c copy -f segment -segment_time 20 pipe:1 \
  | aws s3 cp - s3://bucket/output_%04d.mkv


    


    When I run the command above I receive this error

    


    Could not write header for output file #0
(incorrect codec parameters ?): Muxer not found


    


    This command works except the entire video is uploaded and not the individual segments

    


    ffmpeg -i t2.mp4 -map 0 -c copy -f segment -segment_time 20 pipe:output_%04d.mkv \
| aws s3 cp - s3://bucket/test.mkv


    


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