Hi, just want to know what’s the file size that you guys usually upload for your preview videos (assuming 640×360 resolution and 1 minute duration)? I’m trying to find the optimal balance between quality and loading time 
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Try it at 750kbps – 1000 kbps, then push it up if the quality’s too low. (that’s kiloBITS per second, not kiloBYTES)
Above that though, you probably won’t get much extra return on your data rate.
But what if I render it out in .mov format and use an external converter to convert it into .flv format?
well, you can use any video converter that supports FLV output with good quality, that;s just your choice. You are definitely not limited to using AE’s FLV export:)
By the way, make sure you render your MOV with good quality, because if your MOV file is cr, then your FLV output would even be a bigger cr
I’m always rendering in Full size HQ .mov format with PNG compression. And after that, i’m rendering in flv 1000-1200 kbps (960×540px). And it doesn’t matter 10 seconds project or 5 minute render….
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TyrProductions said
But what if I render it out in .mov format and use an external converter to convert it into .flv format?
Render a lossless (or lightly compressed) mov. Then convert that to flv.
Lossless is a good bet, because it is compressed, but losslessly, like a zip file.
Thanks for the replies guys, but what is the actual file size (in MB) that you guys actually get after compression? Let’s say the preview video is 640×360 and 1 minute long.
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TyrProductions said
Thanks for the replies guys, but what is the actual file size (in MB) that you guys actually get after compression? Let’s say the preview video is 640×360 and 1 minute long.
Do the math:
1,000 kbits/second
1,000 * 60 (seconds) = 60,000 kbits
60,000 / 8 (bits in a byte) = 7500 kbytes
7500 / 1024 (kbytes in a megabyte) = 7.3 mbytes
felt_tips said
TyrProductions said
Thanks for the replies guys, but what is the actual file size (in MB) that you guys actually get after compression? Let’s say the preview video is 640×360 and 1 minute long.Do the math:
1,000 kbits/second
1,000 * 60 (seconds) = 60,000 kbits
60,000 / 8 (bits in a byte) = 7500 kbytes
7500 / 1024 (kbytes in a megabyte) = 7.3 mbytes
+1 for math 
