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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (9)
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Les statuts des instances de mutualisation
13 mars 2010, parPour des raisons de compatibilité générale du plugin de gestion de mutualisations avec les fonctions originales de SPIP, les statuts des instances sont les mêmes que pour tout autre objets (articles...), seuls leurs noms dans l’interface change quelque peu.
Les différents statuts possibles sont : prepa (demandé) qui correspond à une instance demandée par un utilisateur. Si le site a déjà été créé par le passé, il est passé en mode désactivé. publie (validé) qui correspond à une instance validée par un (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (3791)
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What Is Ethical SEO & Why Does It Matter ?
7 mai 2024, par Erin -
pthread_frame : revert 2e664b9c1e73c80aab91070c1eb7676f04bdd12d.
18 juillet 2017, par Wan-Teh Changpthread_frame : revert 2e664b9c1e73c80aab91070c1eb7676f04bdd12d.
The patch does not fix the tsan warning it was intended to fix.
Reverting the patch moves the av_log() back to the outside of the lock.Signed-off-by : Wan-Teh Chang <wtc@google.com>
Signed-off-by : Ronald S. Bultje <rsbultje@gmail.com> -
FFMpeg - moving overlay smoothly across background - ex. on Youtube
12 septembre 2017, par techrCan somebody help me out with this. I was able to create a sliding video overlay on top of a background screen and moved it from point a to point b. However, the resulting video produces choppy movement. The overlay moves step at a time instead of one continous motion. Here’s an example of the code :
ffmpeg -y -stream_loop -1 -i b.mpg -i bg.jpg -filter_complex "
[0:v]scale=320:240[vid];[1][vid]overlay=x='(180+(30-180)*(t-
0)/60)*between(t,0,60)+(30+(290-30)*(t-60)/60)*between(t,60,120)':y='(120+
(120-120)*(t-0)/60)*between(t,0,60)+(120+(30-120)*(t-
60)/60)*between(t,60,120)'[out]" -map "[out]" -r 29.97 -aspect 4:3 -b:v
4000k -minrate 4000k -maxrate 4000k -bufsize 2000k -t 64 t.mpg
Input #0, mpegvideo, from 'b.mpg':
Duration: 00:00:32.34, bitrate: 4000 kb/s
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, progressive), 720x480
[SAR 32:27 DAR 16:9], 4000 kb/s, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc
Input #1, image2, from 'bg.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 19637 kb/s
Stream #1:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 640x480,
25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 (mpeg2video) -> scale
Stream #1:0 (mjpeg) -> overlay:main
overlay -> Stream #0:0 (mpeg1video)
Press [q] to stop, [?] for help
[swscaler @ 0000000002adc740] deprecated pixel format used, make sure you
did set range correctly
Output #0, mpeg, to 't.mpg':
Metadata:
encoder : Lavf57.73.100
Stream #0:0: Video: mpeg1video, yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31,
4000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc (default)
Metadata:
encoder : Lavc57.99.100 mpeg1video
Side data:
cpb: bitrate max/min/avg: 4000000/4000000/4000000 buffer size: 2000000
vbv_delay: -1
warning, clipping 1 dct coefficients to -255..255repeated 2 timesnterLink to video here : https://youtu.be/EE_hrjy4ilg