Help! Mpeg-4 export results in pixelated movie

A friend of mines is a student film maker. He's using a Mac mini and iMovie 4. He has to post a movie on google video and google wants it in Mpeg4 and not as a .mov file, so he exported his movie project in iMovie 4 expert settings as a mpeg4 file. The resulting movie was extremely pixelated.
So what can he do to make his movie have better video quality and less pixelated like it's original form but in mpeg 4 format so he can re-submit it to google video?
MDD PowerMac G4 Dual 867Mhz Mac OS X (10.4.3) 1GB Ram, 128MB Radeon 9800 Pro

Hi MacGallant,
in addition what Lennart said:
720x640 pixel with 8bit color info (here&then...), 30 pics per second....THAT is an amount of data....
to make video files smaller:
* reduce frames per second - 15fps is enough for webusage... (=>reducing half), depending on what you show... 12fps?
* reduce size - making video dramatically smaller, but... really smaller => no more "fullscreen" playback... or, you blow up the small screen with your player => blocky artifacts.... I estimate the video.google screen as 320pics wide.... (reducing file size by 75%)
* reduce audio - many spend not too much brain on that point, full HiFi stereo etc... mono, 22KHz, 11KHz.. do you really need audio on that web video??
* reduce bitrate - in the export options of QTpro/mpeg4 compressor, under "video" you'll find a slider....playaround with that... ok, going under some bitrates, it get's really ugly... you have to try, because bitrate/quality depends much on content of the video....
but, hey, a student has much time to spend................... ;-))))

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>
Lars Breddemann wrote:
> > This happens on 7.7.06.09 and also on 7.7.07.16. I guess there is some corruption in the DB but because it works well apart from export we didn't find it out. Any ideas how to find what is wrong or how to work around the issue?
>
> Hi Simon,
>
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>
> regards,
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looks like your original graphics images ( source files -- source graphics images ) are not matching the project size....
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I'm using iMovie09, trying to get the best quality and lowest file size.
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Here are 2 test examples:
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MPEG4 (best quality/2400kbps)= 102 MB; 10 min. to export
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2cute2b2smart wrote:
I don't know where the problem is.
compression H.264
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Encoding mode: multi-pass
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The specifications you listed are the problem.
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Hi
Or is there a better program to burn DVD's with that will work with iMovie. I don't want to discard the whole project which took months.
As I see it - Neither iDVD, DVD-Studio Pro or Roxio Toast™ can do anything better than what
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• FinalCut any version
Yours Bengt W

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http://img291.imageshack.us/img291/812/premierewindowoc9.jpg
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When I try to export it as a .mov file, I do the following: I click on settings (in the file save dialogue), and go to video settings. I can choose any pixel aspect ratio, it all produces the same results, but for example, let's say, DVCPRO (1.5) (that's the closest to the size I need).
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http://img6.imageshack.us/img6/6730/exportedmoviehl5.jpg
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Tina,
Lets see if we can get kitty onto YouTube.
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Hunt

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Hi,
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Help! Mpeg-4 export results in pixelated movie

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