Q: I downloaded videos to my iPod but they all have no sound? They were all converted and there was still no sound. What am I doing wrong or are they not compatible with my iPod.
A: The most likely cause of this is a problem during the actual conversion process. Both iTunes and Quicktime Pro have problems with source video files that use “multiplexed” audio. Many MPEG-1 and MPEG-2 files, particularly VOB files extracted from DVDs are encoded in this format, and therefore cannot be reliably converted by iTunes or Quicktime.
See Apple’s knowledgebase article, iPod plays video but not audio of some exported files for more information.
Your best option in this case is to look to a third-party video encoding tool, such as Videora (for PC) or iSquint (for Mac). Our iPod 101 tutorials provide more information on some of these tools: