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Autres articles (92)

  • L’utiliser, en parler, le critiquer

    10 avril 2011

    La première attitude à adopter est d’en parler, soit directement avec les personnes impliquées dans son développement, soit autour de vous pour convaincre de nouvelles personnes à l’utiliser.
    Plus la communauté sera nombreuse et plus les évolutions seront rapides ...
    Une liste de discussion est disponible pour tout échange entre utilisateurs.

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (10244)

  • Taking a high resolution picture with FFMPEG and Webcam

    13 mai 2016, par user2088176

    I have a Microsoft LifeCam VX-3000 and I want to capture a single image from this video source.

    I have tried DirectShow :

    ffmpeg -f dshow -video_size 1280x960 -i video="Microsoft LifeCam VX-3000" -vframes 1 file.jpg
    

    
[dshow @ 01D69340] Could not set video options

    and
    Microsoft WDM Image Capture :

    ffmpeg -f vfwcap -video_size 1280x960 -i video="Microsoft LifeCam VX-3000" -vframes 1 file.jpg
    

    
[vfwcap @ 01D79340] Could not set Video Format.

    If I lower the video size to 640x480, it works, but every sites tells me that 640x480 is the maximum video resolution, but the still picture maximum resolution is 1280x960. Like here

    I would like to capture the image at the highest resolution possible. Is there a way to do it with FFMPEG ? What command-line options should I give it ?

    Thank you very much.

  • How to get the highest resolution, dividable by 2 that contains the video without black borders after rotation ?

    22 avril 2016, par Vitalis Hommel

    I rotate a video. Then my goal is to get the biggest resolution, dividable by 2 that contains the video without black borders.

    rotated and bigger

    to

    rotated, smaller and dividable by 2

    My approach.

    ffmpeg -ss 6 -i "t.MP4" -ss 0 -t 5 -vf "rotate='8*PI/180:ow=hypot(iw,ih):oh=ow', scale='1920:1920', crop='1920:1080:0:420'" -c:v libx264 -crf 28 -acodec copy "t2.MP4"

    But that does not meet the criteria. Which command do I need ?

  • FFmpeg. Change video resolution. Maintain everything else [closed]

    7 juillet, par Ivan F.

    I need to reduce the size of the video file a little.

    


    How to reduce video resolution while maintaining everything else as much as possible : aspect ratio, file format, codecs, metadata, etc ?

    


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