Audiospur/Sprache des Ausgabevideos festlegen
Tipp: Viele Infos zu Videoformaten 1)
Kann so ziemlich alles, so z.B. muxen
Muxen und umwandeln in von m740av-Dateien (gemuxt von ProjectX:
ffmpeg -i Tommy.m2v -i Tommy.mp2 -vcodec mpeg4 -b 700kb -acodec mp3 -ab 112kb -ar 44100 Tommy.mp4
ffmpeg -genpts 1 -i ES_Video.m2v -i ES_Audio.mp2 -vcodec copy -acodec copy -f vob output.mpg
Note : In order to mux multiple audio tracks into the same file :
ffmpeg -genpts 1 -i ES_Video.m2v -i ES_Audio1.mp2 -i ES_Audio2.mp2 -vcodec copy -acodec copy -f vob output.mpg -newaudio
Note : In order to remux a PS file with multiple audio tracks :
ffmpeg -i input.mpg -vcodec copy -acodec copy -f vob output.mpg -acodec copy -newaudio
ffmpeg -i input.vob -map 0:2 -acodec aac -ab <audio_bitrate> -vn output.mp4
Transcode audio stream #0:2.
Quelle2)
I have to say, that the video manipulation program FFmpeg, while very powerful, is not very user-friendly when it comes to installation. While many Linux programs can be happily installed from either a pre-compiled package, or downloading source and compiling yourself, this isn't necessarily the case with FFmpeg. The ease of FFmpeg installation largely depends on how many different video codecs and containers you want to be able to input or output. The greater the number, the exponential increase in installation difficulty. My main need was for FFmpeg to accept a wide range of input formats, while outputting H.264 encoded QuickTime (MOV) files. Here's how I achieved this on a Debian Etch server……..
I'm going to assume that you are familiar with using the Linux command prompt, moving between directories, editing text files and have at least some experience compiling programs.
The first thing I would recommend doing is making an addition to your source repository lists.
pico /etc/apt/sources.list
Add the following line:
deb http://www.debian-multimedia.org stable main
This repository contains some essential libraries for xvid and x264 (an open source H.264 codec) amongst other things. You'll need to install some software from here. The software may well be available from other repositories too, that are already in your sources.list file, but add this one to be safe.
Next rebuild your sources:
apt-get update
Quelle3)
The first package to install is debian-multimedia-keyring.
Under root do the following :
wget http://debian-multimedia.org/gpgkey.pub -O - | apt-key add - && apt-get install debian-multimedia-keyring