No, AVI is not a lossless format. AVI (Audio Video Interleave) is a container format that can contain audio and video data compressed using various codecs, some of which may be lossy.

Lossy

they are lossless...

plane waves in lossy dielectrics

== Use the link below and seach for codes. You can find many there. ---- == You can visit the website http://www.downloadatoz.com/codecs/ to find out the video codecs you need. This website also provides you the audio codecs too. I found the number of codecs in this website is the lagrest compares with other website of the same type.