FFMPEG

[zirkov]

Hi, I'm new in Linux and FFMPEG. I need to know about command line when converting with ffmpeg. I'm run on Linux non-GUI, and I need to convert these video into smaller size, I know I will lose about quality. Here I want :

1. AVI format -> Mp4 format
2. MKV format - > mkv format

What command line should I use and what codec should I choose for converting ?

[GMaq]

zirkov,
Here's an example script for avi to .mp4 it is for an iPod but will convert an .avi to .mp4 for pretty much any purpose:

ffmpeg -i (Pathtoyourfile).avi -f mp4 -vcodec mpeg4 -maxrate 1000 -b 700 -qmin 3 -qmax 5 -bufsize 4096 -g 300 -acodec aac -ab 192 -s 320x240 -aspect 4:3 (Pathtowhereyousavefile).mp4

You can change the bitrate values and frame size/aspect ratio values to suit your needs. make sure your version of ffmpeg is compiled with mpeg-4 and/or XviD and aac support. There are documents on how to do this at this link for Ubuntu, You didn't say what distro you use.

https://help.ubuntu.com/community/iPodVideoEncoding?highlight=%28iPodVideoEncoding%29

Also look at AviDemux or WinFF that are both GUI front-ends for ffmpeg.