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Autres articles (58)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Possibilité de déploiement en ferme
12 avril 2011, parMediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
Cela permet, par exemple : de pouvoir partager les frais de mise en œuvre entre plusieurs projets / individus ; de pouvoir déployer rapidement une multitude de sites uniques ; d’éviter d’avoir à mettre l’ensemble des créations dans un fourre-tout numérique comme c’est le cas pour les grandes plate-formes tout public disséminées sur le (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.
Sur d’autres sites (11998)
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FFmpeg : NetStream.Play.StreamNotFound on RMTP stream
22 juillet 2014, par user2957378I want to take snapshots periodically of a RTMP live video stream.
I can see the rtmp video stream using VLC. This is the rtmp url :rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1
I’m using the following command to capture the snapshots, according to the official FFmpeg site here :
ffmpeg -i rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1 -f image2 -vf fps=fps=1 out%d.png
The command produces the following output :
ffmpeg version N-64667-gd595361 Copyright (c) 2000-2014 the FFmpeg developers
built on Jul 14 2014 22:09:48 with gcc 4.8.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzl
libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amr
enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --ena
libavutil 52. 92.100 / 52. 92.100
libavcodec 55. 69.100 / 55. 69.100
libavformat 55. 47.100 / 55. 47.100
libavdevice 55. 13.102 / 55. 13.102
libavfilter 4. 10.100 / 4. 10.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
libpostproc 52. 3.100 / 52. 3.100
HandShake: client signature does not match!
Closing connection: NetStream.Play.StreamNotFound
rtmp://antena3fms35livefs.fplive.net/antena3fms35live-live/stream-antena3_1: Unknown error occurredI’ve tried it with another rmtp streams, but I’m still getting the exact same error.
What could be the problem ?
Thank you ! -
ffmpeg : Video duration confused for some players on Android
2 juin 2021, par Radi ChoI am using ffmpeg to scale down and compress videos to be used in Android app.
The original files are played with no problem and have no metadata issues. When I re-encode them however, the Android player is able to play them, but displays wrong durations. My app is in production and it is using official player implementations, so I wonder if there is a way to fix the corruption using ffmpeg or adding some metadata to the generated files. Hopefully that's possible, but if not - any other possible fixes will be highly appreciated :)


My ffmpeg command is complex, including scaling and encoding but I can confirm this issue is reproducible on my end with the simplest
ffmpeg -i video.mp4 -c:v libx264 videogen.mp4
command.

I'm leaving links to the two files if that's helpful for reference.


- 

- video.mp4
- videogen.mp4






Any ideas what could be causing this and how to fix it ?


Player issues showcase :

video.mp4 (original)


videogen.mp4 (re-encoded)



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ffmpeg simple 5fps webcam capturing but results in poor performance
16 septembre 2022, par irousI'm using Windows 10, intel core i5, 8GB ram. and download ffmpeg from official site : https://www.gyan.dev/ffmpeg/builds/


I'm trying to capture 5fps video from webcam but the output fps is only 3.4 and speed is 0.668x. (I also tried with libx264 but the speed is same 0.5).

This is my command :

ffmpeg ^
 -f dshow -r 5 -s 640x480 -i video="Sony Visual Communication Camera" ^
 -f rawvideo output.raw



screenshot of console output :



The cpu usage for above ffmpeg command is about 0.1% and also ram/disk usage is relatively low.

If I change the fps to 30 (-r 30
), the output is : fps 7.9, speed 0.261x and CPU usage is still very low 0.1%.

But I can easily record 30fps video with the same format yuyv422 in Directshow GraphEdit :



So my question is why does ffmpeg show such poor performance even with 5fps video capturing ? If it can only produce 3.4 fps in the first case why it can output up to 7.9 fps in the latter case (when I set desired fps to 30) ? Did I mis-config ffmpeg ?

Any help is appreciated.