Of these file formats, AVI, MPEG1, MPEG2, WMV, FLV, MP4, 3GP, MP3?

wmv is smallest file

MP4 has the highest compress ratio, it can keep good video quality with smaller file size.

If you want to convert video between AVI, MPEG1, MPEG2, WMV, FLV, MP4, 3GP, MP3. I think this step by step guide would help you a lot

http://www.freedvdripper.net/guides/convert-video-...

Hope it helps. Contact me if you have any other question

Video File Size Comparison

Mp3 is audio format, not video, mp4 is the better choice.

And you should know video bitrate has influence on video size and quality, the lower bitrate, the higher the compression and the lower the quality. But don't care the numeric of bitrate, you should care the video quality.

If you want to customize the bitrate of target video, you can try RZ Video Converter, it can customize the bitrate, fps, video size, even support VBR mode(variable video bitrate), offer the better quality than CBR with the same compression.

You can download it from rzfun.com or

http://www.rzvideoconverter.com/

Hope it can help you.

Hi,

Get a free tool called mp4 to mp3 converter. Link here http://bitly.com/1AyqdrB

It's a very good program and easy to use.

Bye

better convert to avi for sustained results over quality sound and less space, the 3gp and mp4 formats are those who consume very little space but sacrifices picture quality and sound

flv and wmv are smallest, but poorest quality.

mpg1 and 2 are massive, avi/mp4 are middle between size and quality.

Convert and Burn video to AVCHD

Convert MKV to HD Video, DVD to HD Video

E.M. HD Video Converter is a wonderful video converter that lets you not only convert your favorite video to AVCHD which can work on PS3 and Blu-ray player, but also convert all video to HD (high definition) video formats like HD MPEG2 TS Video, HD H264 TS Video, HD WMV Video, HD DivX Video, HD Xvid Video, HD H.264 Video, HD Quick Time Video, HD MPEG4 Video, HD FLV Video, HD MKV Video. besides, E.M. HD Video Converter can easily burn all video and AVCHD video (mts, m2ts, ts) to DVD, DivX DVD.

http://www.google.com/search?hl=en&q=e.m.+hd+video...

If you are using Firefox then there are a number of add-ons that allow you to download videos from Youtube, veoh, dailymotion, etc. If you have it or install it then just go to the addon section of the site and type in "video downloader" or "media downloader".