I'm trying to create movies for the iPod using QuickTime and can't
get it to work. I export a movie with one video track, no audio,
320x240, 30FPS, H.264 encoding, put it into iTunes, "Update iPod"
and iTunes says it can't copy it to the iPod because it "cannot be
played on this iPod". I've tried MPEG2 with the same results. The
weird thing is that even if I use QuickTime Player to convert the
movie to iPod format or use the iTunes "Convert to iPod" function,
the resulting movie has the same problem. Any ideas? Do I need a
sound track? Is there any application available which will tell me
exactly what is wrong with the movie? The catch-all iTunes message
is less than helpful.
Looks like I've solved my own problem - adding an empty sound track
to the movie seems to cure it.
False alarm. It turns out that the problem is nothing to do with
sound, but I think is to do with the data rate. The major problem I
have here is that I don't know *why* iTunes is rejecting my movie and
I'm just having to guess. A better error message or an application
which checked movies for iPod compatibility would be a huge boon.
So, I'm trying to create a 2-second long movie for the iPod, but I
can't get the data rate down to below 768 Kb/s. I suspect this is
because the movie is visually fairly busy (animated satellite images
with graphic overlays) and keyframes are being generated practically
every other frame. Now, no matter what settings I give to the H.264
compressor, I still get similar results. I've set visual and temporal
quality to minimum, set the data rate in SCDataRateSettings to every
value I can think of, told it to generate keyframes every 100 frames
and so on and on to no effect. If I ask iTunes or QT Player to
convert the movie to iPod for me, it gets slightly better results but
the data rate is still too high and iTunes still won't allow it to be
copied to the iPod.
Any ideas? Am I just going to have to give up on the idea of putting
this type of movie on an iPod?
Jerry
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