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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 (...)

  • 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.

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (6282)

  • ffserver : formating

    21 juin 2015, par Reynaldo H. Verdejo Pinochet
    ffserver : formating
    

    Signed-off-by : Reynaldo H. Verdejo Pinochet <reynaldo@osg.samsung.com>

    • [DH] ffserver.c
  • Which `ffmpeg` flags to use for repairing corrupt vids ?

    15 août 2022, par klm234234

    This a really weird issue I get when I pause certain videos played from a usb flash connected to a Samsung TV. The videos play fine until I pause. I calculated the time, a video consistently fails if paused for 2:30 minutes. I get a The selected file is not currently supported

    &#xA;

    I tried all the below and neither work

    &#xA;

    re-encode

    &#xA;

    ffmpeg -i corrupt.mp4 fixed.mp4&#xA;

    &#xA;

    different format

    &#xA;

    ffmpeg -i corrupt.mp4 fixed.mkv&#xA;

    &#xA;

    extra flags

    &#xA;

    ffmpeg -i corrupt.mp4 -profile:v baseline -level 3.0 -pix_fmt yuv420p fixed.mp4&#xA;

    &#xA;

  • ffmpeg replacing audio track with track from another video but different length (sync audio)

    27 août 2019, par Matt

    Background

    I have digitized some old Canon Video8 tapes. I used a SONY Digital8 camera (which is backwards compatible with Video8) to output DV (using it’s inbuilt ADC). The conversion process worked well for the video but the audio came through jumpy/distorted in places. This left me with a problem, was it the Camera or the tape ? So I bought another Samsung Video8 camera (just analog) and using the SONY’s passthrough feature output from the Samsung (Composite & mono audio) into the SONY which output the DV. Much to my delight it worked ! The audio was clear.

    Result

    DV01.avi - Good Video / Crap Audio
    DV02.avi - Crap Video / Good Audio

    Ok so obviously what I would like to do is take the video track from DV01 and the audio track from DV02 and join/mux ? them WITHOUT re-encoding.

    Problem 1 : They have different start times so just copying over the audio track will result it not being in sync.

    After some googling I found you can use ffmpeg to take care of this :

    Firstly here is the Video info using : ffmpeg -i DV01.avi

    Input #0, avi, from 'DV01.avi':
     Duration: 02:53:06.68, start: 0.000000, bitrate: 28878 kb/s
       Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 25000 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
       Stream #0:1: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
       Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s

    Muxing :

    ffmpeg -itsoffset 4 -i DV01.avi -i DV02.avi -map 0:v -map 1:a -c copy output.avi

    In the example above I am delaying the start of the video 4 seconds (I think ?) This is just an example I haven’t actually tried it as the file sizes are 40Gb !

    So my QUESTION is :

    Given the background above what would be the best way to join/mux the two streams together (without re-encoding) with the audio being in sync. Given that syncing the audio to the video may need millisecond tweaking I don’t believe trial and error is a good idea (I don’t want to tweak it by 10ms then rinse and repeat for a 40Gb file) ?

    I just had a thought, could I say create a 10 second clip (from the start) of each video and use them to find the reference/sync start point then use that when muxing the 40Gb versions ?

    Anyway, you get the idea. Looking for ways to solve this problem. Thanks !