Yup. Totally correct. That was my compression ignorance talking. f4v is using MainConcept H.264 codec for video and aac for audio. When using flv I have been using mp3. For f4v my options are aac, aac + version 1, aac + version 2. After a little research I believe just the aac, which is the default choice, is adequate for the dialogue in my source video. Any thought on why it might be giving me the echo? My source is a stereo track. I tried compressing to a mono and stereo output with the same echoey results.
Thanks