FFmpeg ( FF - Fast Forward : MPEG - Moving Picture Experts Group ) is one of the well known command line video compression program that can compress digital audio and video in various formats. Normally there are a large amount of options that and functionality of ffmpeg, including video resolution, video quality, audio compression and quality, frame rate, and more! And also FFmpeg is free an Open Sources tool. Basically FFmpeg is developed under Linux operating system, but now it can be compiled under most operating systems like Microsoft Windows, Apple Inc and Mac OS. Now lets come to the point, HD Video : Hi-Definition Encoding Video is well known key word in video encoding. Today everyone wants HD video on these days. These HD Videos can be easily encoded with these FFmpeg tool. We can download FFmpge from many websides in the internet. [ SVN checkout from - http://www.ffmpeg.org/download.html ]. [ Another location - http://www.videohelp.com/tools/ffmpeg]. So download FFmpeg from one of those resources location. Now lets start to encode a MPG source to an FLV video encoding format. The basic command is ffmpeg -i Inputfilename.mpg -deinterlace -ar 44100 -r 25 -qmin 3 -qmax 6 Outputfilename.flv This command line will convert your video to flv at the same resolution it went in as. And we set the audio frequency to 44100 it a high quality option, and the video frame rate to be 25 frames per second, and set the video quality between 3 and 6, which will give you very good yet quickly serviceable results. I tried this tool and got some nice experience with this pretty tool. Enjoy it.