I've been generating mp4 files lately in Premiere Pro CS5.5 from HDV
originals. The originals are 1440x1080 pixels, but have a pixel
aspect ratio (PAR) of 1.33:1 to stretch the pixels sideways enough to
create a 16:9 display. (The 1440x1080 aspect ratio is 4:3 without
pixel stretching via PAR.) My mp4 files are also 1440x1080 with a PAR
of 1.33:1 because I want to keep them as close to the original HDV as
possible, and don't want to add extra file size by outputting
1920x1080 .mp4 files when I'm not adding any extra detail by doing so.
The resultant files look great and play back perfectly in VLC Media
Player and Windows Media Player, which both read the PAR and stretch
the image out to the specified 16:9 aspect ratio. Quicktime Player,
though, has no concept of PAR and plays the videos back at a squished
4:3 aspect ratio.
Apple, that great controller of their customers' abilities to view
what they want how they want it, appears to have eliminated PAR
recognition from all versions of Quicktime other than Quicktime Pro,
which their customers must pay for. That means -- as far as I can
tell -- that most Apple device owners are going to view my .mp4 files
squished into 4:3 aspect ratio instead of 16:9 as they're meant to be viewed.
Has anyone here had any luck at generating .mp4 files that will get
Quicktime to recognize PAR? Or do I have to regenerate all my files
at 1920x1080, adding a lot of extraneous data, just to satisfy
brain-dead Apple marketing policy?
Grumpy,
Mike Boom
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