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Autres articles (55)
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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 -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
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 (4225)
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incompatible types when assigning to type 'atomic_int' from type 'int'
20 décembre 2017, par Lengesrc/libavcodec/h264_slice.c: In function 'ff_h264_execute_decode_slices': src/libavcodec/h264_slice.c:2757:36: error: incompatible types when assigning to type 'atomic_int' from type 'int'
sl->er.error_count = 0;
^ src/libavcodec/h264_slice.c:2781:48: error: invalid operands to binary
+ (have 'atomic_int' and 'atomic_int')
h->slice_ctx[0].er.error_count += h->slice_ctx[i].er.error_count;
^ make: *** [libavcodec/h264_slice.o] Error 1 make: *** Waiting for unfinished jobs....I compile ffmpeg for android. whether the problem is my environment configure or source code ?
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Audio fade in and looping
30 juin 2020, par BIOStheZergI'm trying to put some background music to a video with a person speaking. The background music should face in over a few seconds. The music is a short snippet, which loops really well. I tried to loop it via
ffmpeg
so that I have everything in one command :

ffmpeg -i video_file.mp4 -f lavfi -i amovie=audio_file.wav:loop=0 -filter_complex '[0:a] volume=2.0 [voice]; [1:a] afade=in:st=0:d=5, volume=0.1 [soundtrack]; [voice][soundtrack] amix=inputs=2:duration=shortest' -codec:v copy out_file.mp4



(this is a simplified version, the real one has a side chain compress as well, but that's irrelevant)


The thing that doesn't work for me is the combination of the looping and the
afade
filter - every iteration of the background music fades in on its own. How could I do this such that only the first one fades in and the others just "continue" playing ? Is it possible to do it in a single command ?

I know I could pre-loop a certain number of iterations based on the video length, but that would require creating a possibly large file (or lose audio quality via compression).


Thanks !


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How to extract parts of the international conference video based on spoken language using command line [closed]
11 février 2024, par John Paul Qiang ChenI have an international conference video which contains two spoken languages, i.e. the video is mixed with sentences of English and Chinese. I would like to remove the Chinese part by command line. Is there any available tools ?