The HD trailers on apple.com, are they encoded by apple, or delivered as ready-made h.264 mp4-files by production companies?
More specifically, what tools are they using to encode it?
We have a demand from our clients to delivering that exact format, but even talking to MainConcept about it didn't reveal any answers. We need to find a quick way to encode this type of file. There's a lot of confusion around this codec, whether it's an apple-version of h.264, or "true" h.264, and if there's a difference between an apple .mp4 file and a .mov-file encoded with h.264, and so on.
So any insight into the creation of the apple trailers would be most appreciated!
Apple's implementation conforms to what's known in the specs for H.264 as the Main Profile.
Here's an explanation: http://en.wikipedia.org/wiki/H.264
Scroll to Profiles to see what they are, then scroll to Software Implementations to see
what Apple conforms to.
I don't know who compresses the trailers.
Most of the encodes on apple.com are encoded by Apple themselves. They are "true" H.264 files, just that most often they are included in a .mov wrapper in order to better support web embedding and metadata. In order to verify .mp4 compatibility, all you would have to do is open one of the .mov H.264 encodes and select Export to MPEG-4 and choose the option for pass-through for both the video and audio.
I see, thanks. Some say that apples h.264 is just a version of it, but it's good to know it's the real thing, and that you can transfer losslessly to another container format. How about transferring between ts/mkv and mov/mp4?