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Autres articles (4)
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Use, discuss, criticize
13 avril 2011, parTalk 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. -
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 (...)
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Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)
Sur d’autres sites (3058)
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ffmpeg to create a slideshow results in very large file
31 mars 2022, par GroovyDotComI have a series of JPEG images named 0000.jpg 0001.jpg 0002.jpg...



I used the following command to turn these into a slideshow video, each frame playing for 1 second.



ffmpeg -framerate 1 -i %04d.jpg -c:v libx264 -vf fps=1 -pix_fmt yuv420p out.mp4




This works fine except that the resulting video is 6x larger than what I get if I encode the exact same frames at normal framerate (e.g. 25 FPS)



I'm looking for a way to effectively get the same efficient encoding as when encoding 25fps but with each frame showing for 1 second.


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how to use ffmpeg to apply 1:1 SAR before concat on large complex filter
24 avril 2019, par 2c2cI use ffmpeg to concat videos in a fashion similar to this :
I ran into a weird error with my inputs
[Parsed_concat_0 @ 000000002a05bb80] Input link in10:v0 parameters (size 1280x720, SAR 2049:2048)
do not match the corresponding output link in0:v0 parameters (1280x720, SAR 1:1)From what I’ve researched I need to use setsar to force all the videos to be 1:1 before I concat, but I’m not sure how to do that in my filter.
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Revision 8a41d18bd0 : Allow large tx_size in lossless coding with transform skipping In lossless codi
20 décembre 2014, par punksuChanged Paths :
Modify /vp9/decoder/vp9_decodeframe.c
Modify /vp9/decoder/vp9_decodemv.c
Modify /vp9/encoder/vp9_bitstream.c
Modify /vp9/encoder/vp9_encodeframe.c
Modify /vp9/encoder/vp9_rdopt.c
Allow large tx_size in lossless coding with transform skippingIn lossless coding, tx_size can be larger than 4x4 when transform
skipping is activated. Compared to regular vp9 lossless coding,
performance improvement for derf is about 5% ; gain is larger
for screen content videos.Change-Id : Ib20ece7e117f29fb91543612757302a2400110b4