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Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Récupération d’informations sur le site maître à l’installation d’une instance
26 novembre 2010, parUtilité
Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...) -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...)
Sur d’autres sites (7571)
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AS3 AIR Detecting video play completion with FFMPEG
21 août 2015, par AntBirchI’m using FFMPEG with AS3 as I need to be able to allow the use of multiple video formats. The problem I’m having is that whilst using FFMPEG the following netStatus will never get triggered -
NetStream.Play.Stop
I’ve tried adding onPlayStatus and onStatus to the client but it seems that FFMPEG doesn’t work with these either. The only way I currently have of knowing if the video is finished is by using
"NetStream.Buffer.Empty"
but this really isn’t practical and may cause issues in the long run.I previously had an issue with being unable to trace out the netStream duration with FFMPEG which resulted in the use of ProgressEvent. Is this function the way forward for my current issue ?
Thanks in advance.
EDIT 1 : It may be possible that because NetStream is a sealed class that I have to use an internal class to add the onPlayStatus function to it ? I’ve added
netStream.client = new Client();
EDIT 2 : Can’t seem to find a way to call onPlayStatus.
EDIT 3 : Not sure if it’s worth noting but
netStream.time
never seems to matchnetStream.bufferlength
when the video has finished. -
The .mp4 video does not play, which is created from ffmpeg library (not command line)
25 septembre 2013, par user1914692I use ffmpeg library to encode frames to a .mp4 video. The program runs smoothly without error. But the output .mp4 video does not play. Properties of the file does not even show it is a video file, no any information of video stream.
The related code is :
const char* ouVideoFileName = "output.mp4";
AVCodecID ouCodec_id = CODEC_ID_H264;But if I change it to :
const char* ouVideoFileName = "output.avi";
AVCodecID ouCodec_id = CODEC_ID_H264;The .avi video plays correctly.
What's wrong with .mp4 video ?
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ffmpeg video will not play in browser
27 janvier 2018, par RedI’m trying to create a simple video with an image and some audio using this command :
ffmpeg -loop 1 -framerate 2 -i image.jpg -i audio.mp3 -c:v libx264 -c:a aac -strict -2 -preset medium -tune stillimage -crf 0 -shortest -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -pix_fmt yuv420p -movflags +faststart output.mp4
But the resulting video will not play in latest firefox, though it will play in chrome 63.
ffmpeg stats :
ffmpeg version 3.4.1-1+b1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7 (Debian 7.2.0-18)
configuration: --prefix=/usr --extra-version=1+b1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Hyper fast Audio and Video encoderAny ideas ?