Why does procoder encode and TMPGEnc does not



I downloaded a couple of small avi files and decided to encode them to mpeg1 and put them on a cd,i used Tmpgenc but when they finished both had sound but no picture,so then i used Canopus Procoder(quite an old version) and it worked perfectly,as i have all the latest codecs and tmpgenc is up to date i cannot think whats wrong,anybody have any ideas. :bow: