Thanks, I didn't realize that AC3 could go into an MP4 container. I'll do some playing around next week. Right now I only have two samples to play with, my new tuner shows up Tuesday.
Yeah, the file types can be really fussy with the things they will keep or lose when a video is placed in them.
Some people want to get rid of a type of subtitle "teletype"?? and if you place the video in a certain container they will be gone.
Then the Audio types. What the containers will accept is a real mixed bag.
Now I could clean up my files (h264.mp4s) by having the video&subtitle files all in a single MKV file.
But somewhere here they mention that pulling a video file out of a MKV container will cause the loss of
some information (timing?).
The MKV container transfers some type of info from the video file into the MKV container so if you change the file type
of the video the info is gone with the container.