`ffmpeg` is a free software project aimed at producing tools (libraries and programs) for handling multimedia data.
17
votes
7answers
11k views
How to grep standard error stream (stderr)?
I am using ffmpeg to get the meta info of an audio clip. But I am unable to grep it.
$ ffmpeg -i 01-Daemon.mp3 |grep -i Duration
FFmpeg version SVN-r15261, Copyright (c) 2000-2008 Fabrice ...
8
votes
5answers
3k views
How do I merge two *.avi files into one
I have two *.avi files:
sequence1.avi
sequence2.avi
How do I merge these two files using a command-line or GUI?
10
votes
2answers
3k views
How to record my full screen with audio?
If I want to record my desktop, I use:
ffmpeg -f x11grab -s `xdpyinfo | grep -i dimensions: | sed 's/[^0-9]*pixels.*(.*).*//' | sed 's/[^0-9x]*//'` -r 25 -i :0.0 -sameq valami.avi
But it doesn't ...
4
votes
2answers
4k views
How get the best quality when converting from mp4 to avi with ffmpeg?
When I use this, the quality doesn't look bad.
ffmpeg -same_quant -i video.mp4 video.avi
In the ffmpeg documentation is written: "Note that this is NOT SAME QUALITY. Do not use this option unless ...
2
votes
1answer
3k views
ffmpeg and libmp3lame produces bad audio quality?
when I get a flash video from YouTube, why is the quality of the audio much worse than the origin video on YouTube? When I downloaded the flash movie, I convert it to avi like this:
ffmpeg -i ...
