Recherche avancée

Médias (17)

Mot : - Tags -/wired

Autres articles (39)

  • 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 (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (7815)

  • How to use multi colors in drawtext FFmpeg

    21 novembre 2016, par RSMEENA

    How can i use multi colors in drawtext ffmpeg. for example text=’NATIONAL PARK’ , now i want ’NATIONAL’ in blue and ’PARK’ in red.

    How can i do that in FFmpeg.

  • dashenc : check pts to prevent division by zero error

    30 janvier 2020, par Alfred E. Heggestad
    dashenc : check pts to prevent division by zero error

    this usecase will cause a division by zero trap :
    

    1. dashenc has received one frame
    
2. os->max_pts and os->start_pts have same value
    
3. delta between max_pts and start_pts is 0
    
4. av_rescale_q(0, x, y) returns 0
    
5. this value is used as denominator in division
    
6. Bang ! -> segfault
    

    this fix checks that max_pts > start_pts.
    
the fix has been tested and works.
    

    Signed-off-by : Alfred E. Heggestad <alfred.heggestad@gmail.com>
    
Reviewed-by : Jeyapal, Karthick <kjeyapal@akamai.com>
    
Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libavformat/dashenc.c

  • FFmpeg - convert 2 audio tracks from video to 5.1 audio, (play video with different languages to different devices) [closed]

    10 février, par Sandre

    How to watch a movie with one language playing through the speakers and another through the headphones ?

    &#xA;

    Disclaimer : I know nothing about audio conversion, and don't want to study ffmpeg. I spend a few hours searching how to do, actually much more than I want. I found a bunch of questions from different people and not a single working solution, so I made a clunky but working solution. If someone helps me make it more elegant, I'll be happy. If my question just gets downvoted like most ffmpeg newbie questions, it probably deserves it. And I hope my question can help people who want enjoy video with 2 different languages.

    &#xA;

    A clumsy but working solution.

    &#xA;

      &#xA;

    1. Setup Aggregate Audio Device to play 2 channels of 5.1 through speakers and 2 through bluetooth headphones. (On screenshot Audio MIDI Setup for MacOS)&#xA;Agregate Device config

      &#xA;

      2. &#xA;

    2. Use ffmpeg to convert 2 audio tracks into 5.1 audio.

      &#xA;

      3. &#xA;

    3. Play video with new external audio track.

      &#xA;

      4. &#xA;

    &#xA;

    # print list of channels&#xA;ffprobe INPUT.mkv 2>&amp;1 >/dev/null | grep Stream&#xA;&#xA;--- sample output ---&#xA;    Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1280x544, SAR 1:1 DAR 40:17, 23.98 fps, 23.98 tbr, 1k tbn (default)&#xA;    Stream #0:1(rus): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)&#xA;    Stream #0:2(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 640 kb/s&#xA;&#xA;# extract audio&#xA;ffmpeg -i INPUT.mkv -map 0:1 -acodec copy ru.ac3&#xA;ffmpeg -i INPUT.mkv -map 0:2 -acodec copy en.ac3&#xA;&#xA;# extract only front_center channel from 5.1 - speach&#xA;ffmpeg -i en.ac3 -filter_complex "channelsplit=channel_layout=5.1:channels=FC[center]" -map "[center]" en_front_center.wav&#xA;ffmpeg -i ru.ac3 -filter_complex "channelsplit=channel_layout=5.1:channels=FC[center]" -map "[center]" ru_front_center.wav&#xA;&#xA;# join to 5.1&#xA;ffmpeg -i en_front_center.wav -i ru_front_center.wav -filter_complex "[0:a][0:a][0:a][0:a][1:a][1:a]join=inputs=6:channel_layout=5.1[a]" -map "[a]" output.wav&#xA;

    &#xA;

    Is it possible to avoid re-encoding the audio and copying the same channel many times to reduce the file size ?

    &#xA;

Navigation