Category: ffmpeg

You can use the open source ffmpeg program to convert a media file from low quality to high quality format

[shellprompt]# /fullpath/to/ffmpeg/ffmpeg -i source.mp4 -c:v libx264 -crf 19 destinationfile.flv

OR

[shellprompt]# /fullpath/to/ffmpeg/ffmpeg -i source.mp4 -c:v libx264 -ar 22050 -crf 28 destinationfile.flv

Parameter explained
-crf XX is the quality of the video you are looking for. It’s between 0 and 51 (but between 17 and 23 it’s a reasonable range and the lowest the number is, the better quality the video is going to be).

For the -ar 22050 it’s for adjusting the audio sample range (audio quality). You can choose 11025, 22050 or 44100.

For many other example and details explanation refer Tutorial for FFMPEG

You can use the open source ffmpeg program to convert a media file from one format to another.

Below is an exmple:

[shellprompt]# /fullpath/to/ffmpeglibrary/ffmpeg -i InputFile.FLV OutputFile.mp3

There are various other options you can use to specify the attribute of the output file.

Here are few of the examples code http://linuxers.org/book/export/html/593