Quote:
Originally Posted by Lowpro
For what it's worth. I author MP4's to Blu-ray (using multiAVCHD) all the time, the audio and video of which appear to be Blu-ray compliant. The resulting video plays fine if I don't re-encode, both with my software and hardware based Blu-ray players. Here's the catch though, at least in my case. When attempting to rewind, fast forward, or advance through the chapter stops it's extremely laggy. It's laggy to the point it might as well not even work. If I re-encode the same video there are no issues with the resulting Blu-ray. The ability to rewind, fast forward and advance through the chapter stops is always silky smooth.
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It seems to me that the source MP4s you're talking about were not encoded specifying keyint or it was set too long, which is what causes horrible lag when searching or skipping, but especially searching. And when you re-encode the video, you or the encoding software are setting keyint to a shorter length, so it's easier for you to search or skip chapters.