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Problem playing H.264 encoded on QtPro v7.0.4 on Qt v7.1.3



hi -

i have about 14 hours of material that we encoded on QtPro v7.0.4 that cannot play on Qt v7.1.3. i have read both the quicktime-users and streaming-server-users lists for the past couple of months and haven't seen anything like this problem.

here's the details:
1. material transcoded from .mp4 file (audio+video) to .mov file with h.264 video and AAC stereo audio at 44.1. the files are hinted with both a video and sound hint track.
2. material played correctly on prior versions of QtPlayer either locally from a file or remotely using a DSS.
3. installed v7.1.3, audio plays correctly, but video displayed as just large white image. i get the same behavior whether remote/local on a W2K/PC or remote on a OSX/Mac (still have to test local on Mac).
4. the original material was captured as an .mp4 file. that material still plays correctly.


so, how come material coded with Apple's Quicktime Pro (beta) no longer works? and, did i miss the release note saying that i had to redo my video or fix it with some tool?

you can see the material at:

  http://bmrc.berkeley.edu/research/nossdav05/program.html

if you can't download a file, if you want to see details, let me know and i'll post an ftp'able file.

my current guess is that something in the security checks for v7.1.3 or the decoding/rendering of H.264 is broken.

i recently published a paper in IEEE Multimedia that describes the capture and publication of this content - you can see the article (free) at

http://www.computer.org/portal/cms_docs_multimedia/multimedia/promo3.pdf

needless to say i am concerned that many readers will go to our site to look at the video and viola, it doesn't work. hopefully we don't have to recode all this material. it took over 170 hours to transcode it last time...

thanks for your time,
	Larry Rowe
--
Lawrence A. Rowe
Emeritus Professor, Elec. Eng. & Comp. Sci., UC Berkeley
925-218-2221  http://bmrc.berkeley.edu/~larry
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