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Exporting Windows Media files – bit rate
Hello Guys,
I’ve been trying to export a 1:00 minute FCP project into a Windows Media file. I have flip for Mac installed in my G5 so I can do 2 pass encoding. My problem is that even though I set the bit rate to 300 Kbps, the rendered file has a bit rate of over 800 Kbps. What can I do to get a final rendered file with a 300 Kbps bit rate?
Thanks,
miguelounge
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6 Replies
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You can’t use Quicktime Player to judge the bitrate of a WM file. If you use WMP9Mac it will show the peak rather than avg. bit rate. Best it check bitrate in WMP10 (XP) or ASFView (on Windows also).
There’s a real need to check WM bit rate on the Mac.
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Call the support folks at the number on their website. Flip4MAC has very nice and attentive support personnel.
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Hello Craig and thanks for your help,
I’ve checked the bit rate in WMP10 (in windows XP) and still gives me a different bit rate than the one I had set. Please note that I’m working with constant bit rate
Thanks,
miguelounge
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You could also see the total size of the file, and since you know the length
of the video, do the math: total file size divided by seconds (60). A 300kbs
data rate should give you something like 2.25MB for file size (add a little
for overhead though). An 800kbs rate would give you a 6+MB file.
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Go over to the Flip4Mac forum and post the issue.
https://www.flip4mac.com/fusetalk/forum/
They’ll respond and ask to see the file by email or FTP.
There could be another issue lurking here. I usually find the bitrate within 5% of the target. If anything, it tends to be slightly under rather than over with CBR encodes. -
The targeted bit rate was 396kbps and the actual bit rate showed as 406kbps in WMP10, ASFView and WMP9Mac. That’s very close to what it should be.
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