I’ve noticed that some Blu Ray movies have a small low res video embedded in the same m2ts file as the main movie ( see BDinfo below for National Treasure 2)
Codec Bitrate Description
MPEG-4 AVC Video 23245 kbps 1080p / 23.976 fps / 16:9 / High Profile 4.1
MPEG-4 AVC Video 179 kbps 480p / 23.976 fps / 16:9 / High Profile 3.2
The second movie appears to be all black but occasionally briefly displays an image when played. When I play the original stream I don’t see these images in the movie. For example, the small video displays a picture of Abraham Lincoln about 44 seconds into play; that image does not show up when I watch the original m2ts file.
I’ve seen this in several movies - anyone know why it’s there? If I use Clown_BD or TSmuxer and just grab the main video stream or if I grab both, it appears fine (Haven’t watched all the way through)