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Autres articles (40)
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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 (...) -
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 (...) -
Initialisation de MediaSPIP (préconfiguration)
20 février 2010, parLors de l’installation de MediaSPIP, celui-ci est préconfiguré pour les usages les plus fréquents.
Cette préconfiguration est réalisée par un plugin activé par défaut et non désactivable appelé MediaSPIP Init.
Ce plugin sert à préconfigurer de manière correcte chaque instance de MediaSPIP. Il doit donc être placé dans le dossier plugins-dist/ du site ou de la ferme pour être installé par défaut avant de pouvoir utiliser le site.
Dans un premier temps il active ou désactive des options de SPIP qui ne le (...)
Sur d’autres sites (9254)
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ffmpeg to auto lower/fade audio volume of one audio stream when microphone voice detected ?
12 juin 2021, par Lectos LaciousI want to do live audio translation via microphone, to get streamed live vid/audio from Facebook, plug the mic into laptop and do live translation by mixing existing audio stream with one coming from the mic (translation). This is OK, somehow I got this part by using audio filter "amix" and mix two audio streams together into one. Now I want to add more perfection to it, is it possible to (probably is) upon mic voice detection to automatically decrease/fade down 20% volume of input/original audio stream to hear translation (mic audio) more loudly and then when mic action/voice stops for lets say 3-5 seconds the volume of original audio stream fades up/goes up to normal volume... is this too much, i can play with sox or similar ?


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How to stream WEBM Video by Media Source Extensions API
4 octobre 2023, par Mahmoud KhudairiI'm developing video streaming website using MSE.


Each video converted to FragmentedMP4 (h264,aac =>
avc1,mp4a
)

It is working very fine but what if I wanted to use
webm
format ? like YouTube or Facebook they sometimes use it.

I want to know how to get index (like sidx atom in fmp4) from
VP8
,VP9
orvorbis
codec
I use bento4 and ffmpeg to get metadata from video and audio
but bento4 is for MP4 Just, and use MP4BoxJS to parse index in browser by JavaScript.

What should I use ?
ffmpeg
or what to create fragmentedwebm
or something like that and get index stream info to append segments to MSESourceBuffer
and sure it should be seekable stream..

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streaming file with FFmpeg won't start on the specific time with -ss
23 avril 2022, par denn0nHi I'm trying to stream a file to Facebook but I would like to start the streaming in 00:01:21 of the video whit the command


ffmpeg -ss 00:01:20 \
-re -i 'My_Video.mp4' -f pulse -ac 2 \
-i default -pix_fmt yuv420p -c:v libx264 -s 1280x720 \
-preset veryfast -c:a aac -b:a 160k -ar 44100 \
-threads 0 -bufsize 1000k -vb 500k -maxrate 500k -deinterlace -g 30 -r 30\
-f flv -flvflags no_duration_filesize "rtmps://live-api-s.facebook.com:443/rtmp/MY_FACEBOOK_KEY"



but the stream do not start in the 00:01:20 just start regularly in the 00:00:00.00, what could be wrong ? thank you all for your time !


my ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers