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Autres articles (38)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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.

Sur d’autres sites (6992)

  • scaling a video captured in portrait mode using FFMPEG

    24 octobre 2016, par Ahmed Mujtaba

    I’m trying to rotate a video on my android app using FFMPEG and then uploading it to the server. The following command does the job for me :

    -y -noautorotate -i inputPath -vf transpose=1,scale=360:640,setsar=1 -metadata:s:v rotate=0

    The aspect ratio of the original video is 16:9. I’m trying to maintain the aspect ratio after rotation so I add padding on either side of the video to scale it properly with the following command :

    -y -noautorotate -i inputPath -vf transpose=1,scale=iw*min(360/iw\,640/ih):ih*min(360/iw\,640/ih),pad=640:360:(360-iw)/2:(640-ih)/2,setsar=1 -metadata:s:v rotate=0

    The video scales perfectly on the website but now the issue is that I can see the black bit when I play it on the android app which I don’t want. I don’t mind the black bits when I play the video on the website but on the app, it looks terrible. The container of the video on the app has height "280dp" and width of "380dp". How can I scale the video so the black sides don’t show when I play a video on the app.
    Any solutions/suggestions ?

    This is what the video looks like when I play on the website :

    enter image description here

    This is what it looks like on the app

    enter image description here

  • Create and combine a blank video stream with a subtitle steam

    10 décembre 2014, par CPO

    I have a live .ts stream that contains a video stream, audio stream and subtitle stream. What I want to do is to display the video in full, eg video and audio and subtitles, but in parallel take the same stream and ’blank’ the video to black, but allow the subtitle stream to be rendered into that video stream for display separately from the fully displayed streams. The reason for this is to allow the subtitles to be displayed separately and cropped,from a second projector, but to have a black backgroung to avoid distractions when there is no subtitle present. I believe this can be achieved using FFMPEG but my limited experience with this utility rather limits my progress. I believe that the blanked video stream needs to be the same frame rate and resolution as the original in order that the rendered subtitles stay in synch with the original video stream. Any help or suggestions warmly welcomed. Thank you

  • Audio/Video drop when merging 3 FFmpeg commands which includes scale, pad, filter complex

    21 novembre 2018, par Mayank

    I am trying to scale 2 videos to h=240 resolution keeping the same aspect ration. Then I am merging the audio and video of these 2 videos to form a single mp4 file. I have 3 commands in total and the final result is good.

    However, I want to combine these 3 commands and get the same result in one single command. Can someone please help me in combing these commands ? Thanks in advance.

    First Command :

    ffmpeg -i 01_v.mp4 -vf "[0]scale=-1:240[scaled_240]; [scaled_240]pad=width=320:height=240:x=(320-in_w)/2:y=(240-in_h)/2:color=black" -preset ultrafast -y -r pal "1_v.mp4"

    Second Command :

    ffmpeg -i 02_v.mp4 -vf "[0]scale=-1:240[scaled_240]; [scaled_240]pad=width=320:height=240:x=(320-in_w)/2:y=(240-in_h)/2:color=black" -preset ultrafast -y -r pal "2_v.mp4"

    Third Command :

    ffmpeg -i 1_a.opus -i 2_a.opus -itsoffset 0.024181 -i 1_v.mp4 -itsoffset 0.113192 -i 2_v.mp4 -filter_complex "[1:a]adelay=15726.168|15726.168[a1]; [0:a][a1]amix; [3:v]trim=0:15.726168,geq=0:128:128[silence]; [3:v]fifo[3v]; [silence][3v]concat[3_v_silence]; [2:v]fifo[2v]; [2v][3_v_silence]hstack[out_v]; [out_v]pad=width=640:height=480:x=(640-in_w)/2:y=(480-in_h)/2:color=black" -crf 40 -preset ultrafast -y -r pal "out.mp4"

    I have tried to combine the above 3 commands and formed a single command. However, the result is not good with muted audio for few seconds in the middle of playback, also the 2nd video gets over few seconds earlier. Hence ending up in messing up the audio/video sync.

    This is my single command which doesn’t produce the desired result :

    ffmpeg -i 1_a.opus -i 2_a.opus -itsoffset 0.024181 -i 01_v.webm -itsoffset 0.113192 -i 02_v.webm -filter_complex "[1:a]adelay=15726.168|15726.168[a1]; [0:a][a1]amix; [3:v]trim=0:15.726168,geq=0:128:128[silence]; [3:v]fifo[3v]; [silence][3v]concat[3_v_silence]; [2:v]scale=-1:240[2v_scaled_240]; [2v_scaled_240]pad=width=320:height=240:x=(320-in_w)/2:y=(240-in_h)/2:color=black[2v_padded]; [3_v_silence]scale=-1:240[3v_scaled_240]; [3v_scaled_240]pad=width=320:height=240:x=(320-in_w)/2:y=(240-in_h)/2:color=black[3v_padded]; [2v_padded]fifo[2v]; [2v][3v_padded]hstack[out_v]; [out_v]pad=width=640:height=480:x=(640-in_w)/2:y=(480-in_h)/2:color=black" -crf 40 -preset ultrafast -y -r pal out.mp4

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