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Autres articles (25)
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Qualité du média après traitement
21 juin 2013, parLe bon réglage du logiciel qui traite les média est important pour un équilibre entre les partis ( bande passante de l’hébergeur, qualité du média pour le rédacteur et le visiteur, accessibilité pour le visiteur ). Comment régler la qualité de son média ?
Plus la qualité du média est importante, plus la bande passante sera utilisée. Le visiteur avec une connexion internet à petit débit devra attendre plus longtemps. Inversement plus, la qualité du média est pauvre et donc le média devient dégradé voire (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (1766)
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Set the time according to the image height
5 août 2019, par Võ NhânI am creating video from the image using ffmpeg, I have some problems with image height and video length, I want to set the time automatically according to the image length.Is it possible to set the time -t to the automatic value ?
ffmpeg -y -loop 1 -i "{output}_cut1.jpg" -ss 0 -t 25 -r 1 -loop 1 -i 01.png -ss 0 -t 25 -filter_complex " [1:v] scale=w=1:h=1[fg]; [0:v] scale=w=-2:h=3*ih, crop=w=3*1988:h=3*1600/1.2:y=t*(in_h-out_h)/25 , scale=w=1920:h=1080, setsar=1 [bg] ; [bg][fg]overlay=shortest=1[v] " -map "[v]" -c:v h264 -crf 18 -preset ultrafast "{output}_cut1.mp4"
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Changing the background color of the movie while using tpad and adelay
1er août 2019, par S.Ti want to change the background color of a movie while using
tpad
andadelay
commands. it is now black ( until the movie starts).the command i tried listed below, and i don’t know how to change the color while the movie is in it’s delay ( probably something with the
tpad
that needs to be change).-filter_complex [0:v]scale=1920:1080,tpad=start_duration=5[v];
[0:a]adelay=5s|s[a] -map [v] -map [a] -b 6000kthe 5 seconds that the movie is in its
"waiting mode"
needs to be changed from default black to some other color. Thanks. -
ffmpeg performence when encode mpeg2
25 août 2015, par Gang Chenwhen i encode a 1080p mpeg2 format video with avcodec_encode_video2, the avcodec_encode_video2 will cost 100ms per frame.
how can i decrease the encode time ?
encode paramter as below :
bit_rate 20000000
width 1920
heigth 1080
time_base (AVRational){1, 30}
gop_size = 15;
max_b_frames = 2;
trellis = 2;
me_cmp = 2;
me_sub_cmp = 2;
pix_fmt = AV_PIX_FMT_YUV420P;=====================================
This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.