Question about seamless option in ImgBurn Support Posted March 18 Yes, if you're doing extra editing/authoring then everything changes. I have no problem with .mp4, though it has its limitations as well. Audio is limited I think to one track. I think not sure. Also, if using aac which is the preferred audio encoder with .mp4, you really have to know how to distribute the bitrate to get a really nice and loud playback. Also, aside from MPC HC, etc... not too many receivers do aac playback that well, especially 5.1 and above. Hence it's one reason I keep the .mp4 that are great, and convert the rest to .mkv with AC3. I've tested countless of each, and the AC3 to me is clearer and louder. It's all personal preference of course. Remember, there's always a reason why there's something new embraced. It's not always better, though what I'm referring to is mostly the new HEVC method. There's a great guide over at http://www.digital-digest.com/articles/VidCoder_Tutorial_page2.html regarding the VidCoder handbrake blood brother which breaks down the whole aac audio option. Your free to check it out. After using VidCoder it's almost improbable you'll continue with Handbrake. Everyone agrees Handbrake is a pita to tinker with. Even if for now I only play my files on my PC using my HDTV speakers, I keep the 5.1 audio if it's included in the original DVD etc... just in case I upgrade to nice sound system. I'll be ready with the source.