
Recherche avancée
Autres articles (70)
-
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
-
Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (5111)
-
Segmenting video into different parts and unique rendering on each part then concat afterwards
2 mars 2016, par goudarzihaI currently have a very poorly performing application that splits up a video, renders it and the concats all rendered videos on android using ffmpeg
So I am running into issues with segmenting a video up into 5 parts at each different intervals/durations, rendering each video segment uniquely slowing up/speeding up and then finally concat all the segments back into one final video.
Currently I am doing each part separately -
Segmenting -
example for one segment
-y -i pathIn -ss 0.0 -t 2.0 -vcodec copy -acodec copy -an pathOutRendering - example slowing down/speeding up
y -i path -filter:v setpts=2.0*PTS pathOut
Concat -
f concat -i input1.mp4 -i input2.mp4 -i input3.mp4 -i input4.mp4 -i input5.mp4 -c copy output.mp4
Right now I am running different separate thread for each editing of video, so 3, segment, rendering and concat.
I am trying to get this all done on one command ffmpeg line if at all possible, if not just the segmenting and rendering of the videos and kick of the concat cmd line later.
I am trying to emulate something similar to this https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs
-
ffmpeg on ubuntu convert 3gp to iphone 5 format [closed]
21 mars 2013, par JistanidiotI'm desperately trying to convert a 3GP video into something the iphone 5 will import and play. Verizon says they cannot help me that it is not possible to convert a Droid video to iphone.
After much trouble I came to the conclusion to try the conversion on my Ubuntu box using ffmpeg. Again after a long struggle, I removed the package and followed the directions at https://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide
Now with the new complied ffmpeg, I try the following command :
ffmpeg -i foo.3gp -s 320x240 -r 30000/1001 -b:v 200k -bt 240k -vcodec libx264 -coder 0 -bf 0 -flags2 -wpred-dct8x8 -level 13 -maxrate 768k -bufsize 3M-acodec libfaac -ac 2 -ar 48000 -ab 192k output.mp4
However I keep getting the error :
[NULL @ 0xa9874a0] Unable to find a suitable output format for 'libfaac' libfaac: Invalid argument
I found a random blog post saying you needed to add
`-target type’
and then specify target file type (“vcd”, “svcd”, “dvd”, “dv”, “dv50”, “pal-vcd”, “ntsc-svcd”, … ). However after trying all 8 of them listed I still got the same errors.
I'm at a complete loss. How can I convert the 3gp video into the iphone 5 format ?
Thanks in advance.
-
How do we determine the required dependencies for ffmpeg
15 mars 2021, par user3656901I've installed ffmpeg on ubuntu. I am going to copy the compiled ffmpeg and required dependencies to a directory and copy that directory to another machine. This way we can run ffmpeg on another machine without installation. How do we determine the required dependencies to copy ? Saw instruction on this page : https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu, but it didn't explain the required dependencies for ffmpeg.


When I used ldd ffmpeg, I got something like :


linux-vdso.so.1 (0x00007fffe20fd000)
 libavdevice.so.58 => /lib/x86_64-linux-gnu/libavdevice.so.58 (0x00007fc116e90000)
 libavfilter.so.7 => /lib/x86_64-linux-gnu/libavfilter.so.7 (0x00007fc116b10000)
 libavformat.so.58 => /lib/x86_64-linux-gnu/libavformat.so.58 (0x00007fc116890000)
 libavcodec.so.58 => /lib/x86_64-linux-gnu/libavcodec.so.58 (0x00007fc1152d0000)
 libavresample.so.4 => /lib/x86_64-linux-gnu/libavresample.so.4 (0x00007fc1152a0000)
 libpostproc.so.55 => /lib/x86_64-linux-gnu/libpostproc.so.55 (0x00007fc115270000)



Are those the required dependencies ? It didn't list the files under bin, include or share folders.