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Autres articles (49)
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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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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...)
Sur d’autres sites (10079)
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lavc/mediacodec : increase buffer dequeue timeout when the codec needs to be drained
20 juin 2016, par Matthieu Bouronlavc/mediacodec : increase buffer dequeue timeout when the codec needs to be drained
Increase buffer dequeue timeout when the codec needs to be drained as it
could happen that no input buffer is available when we receive a null
packet for the first time (meaning we are unable to signal end of stream
and mark the codec as draining).Fixes potential loss of last frames after sending a null packet.
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What's the Netflix / vmaf result stand for ?
1er septembre 2021, par HanamakiI ran the vamf between two mp4 files, and I got the result as :



<metric min="0.294617" max="0.999526" mean="0.902007"></metric>
<metric min="0.559920" max="0.994265" mean="0.918411"></metric>
<metric min="0.372149" max="0.999764" mean="0.907398"></metric>
<metric min="0.226668" max="0.999331" mean="0.915917"></metric>
<metric min="0.224996" max="1.010998" mean="0.881612"></metric>
<metric min="0.000000" max="32.177296" mean="6.365028"></metric>
<metric min="0.000000" max="145.765976" mean="7.202581"></metric>
<metric min="0.008498" max="0.910434" mean="0.247533"></metric>
<metric min="0.023310" max="0.990787" mean="0.457384"></metric>
<metric min="0.029596" max="0.995830" mean="0.529965"></metric>
<metric min="0.032303" max="0.997724" mean="0.586864"></metric>
<metric min="0.000000" max="100.000000" mean="71.630354"></metric>
 


I got the "vif" from the paper "IMAGE INFORMATION AND VISUAL QUALITY". However,what's the meaning of 4 scales of vif ?
And any detail introduction about this result ? Thank you very much.


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how to play audio output to a device using ffmpeg's avdevice library ?
18 septembre 2022, par sssssssHow can I use the ffmpeg's avdevices c library to output audio to an audio device (specifically alsa). All I could find is its doxygen and the only useful thing I was able to take out of it is, quote


"the (de)muxers in libavdevice are of the AVFMT_NOFILE type (they use their own I/O functions). The filename passed to avformat_open_input() often does not refer to an actually existing file, but has some special device-specific meaning - e.g. for xcbgrab it is the display name."


but I don't understand where do I specify AVFMT_NOFILE and where do I specify which device I want use.I see how I can get an 'AVOutputFormat' pointer but then what do I do with it ?


update :
so now i found the function 'avformat_alloc_output_context2' so my code looks like this :


AVPacket pkt = av_packet_alloc();
avformat_alloc_output_context2(&ofmt_ctx, NULL, "alsa", NULL);
avformat_new_stream(ofmt_ctx, NULL);

while(av_read_frame(fmt_ctx, pkt) == 0){
 av_write_frame(ofmt_ctx, pkt);
}


fmt_ctx is the input file's AVFormatContext.


but I am still getting an error '[alsa @ 0x555daf361140] Invalid packet stream index : 1' what am I missing ?


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