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Compress 4GB Video clip to 20-30MB for web
Hi
I need some advice please.
I have a 16 minute (16:9 PAL) video clip (exported out of FCP as a .mov) which I need to compress enough to play on a website (at approx 320×180 though a little larger would be ok too).
I’ve fiddled around with settings in Handbrake, Compressor, Squeeze etc but wondered if there was an optimum setting to ensure the highest possible picture quality?
Any suggestions greatly appreciated.
Thanks
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8 Replies
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Hi Marialuisa,
If you want to put 16m in a 30MB file that means a total (A/V) data of some 1.8 MB/minute.
Making few numbers, that means a data rate of 240 Kbps. If you let 64Kbps for the auudio, you can set the compressor for 150Kbps.
rafael -
If you keep your data rate at 600-700kbps or below for the video and the audio at say 80kbps then you will be completely fine. I’ve even got a video right now at over 1000kbps that plays fine with the workflow below:
Here’s the trick – crunch it down as a quicktime and then open it in Quicktime Pro and export it as an MP4 but ONLY wrap it. Don’t re-encode. Select pass through for audio and video. Load it up in JW Player or Flow Player and tell it to auto buffer.
Why MP4? It streams better (psuedo html streaming) and will play in any browser for any OS.
Try it….you may never go back to anything else. =) A friend showed me this last year and I love the work flow.
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kyler boudreau
http://www.theatereleven.com
ph.310.425.2231 -
Hi Kyler
Thanks so much for posting this fix, sounds like an excellent work flow though my QT Pro (V 7.6.6) has the pass-through option greyed out for both video and audio. Is there something else I need to do?
Thanks again,
Maria
Macbook Pro
OSX 10.6.4
2.4GHz Intel Core i5
4GB 1067 MHz DDR3 -
[kyler boudreau] “Here’s the trick – crunch it down as a quicktime and then open it in Quicktime Pro and export it as an MP4 but ONLY wrap it. Don’t re-encode. “
Hi Kyler, i don’t see any option to “re-wrap” with QT Pro (MPGStreamclip can do it). Neither how to set A/V “pass throug”.
Anyway if you re-wrap a 6 GBs QT file as MP4, you end up with a 6 GBs MP4.[kyler boudreau] “If you keep your data rate at 600-700kbps or below for the video and the audio at say 80kbps then you will be completely fine”
This will yields a 90/100 MB file.
rafael -
1) You have to have Quicktime Pro 7 (not that mind numbing X player Apple laid upon us with Snow Leopard). If you have Pro you can do it – promise. I do it all the time for clients.
2) You are right on file size – the MP4 is not encoding or crunching. It is just wrapping to give better browser ease, etc. Crunch it down in Sorenson or Compressor first, then wrap that file.
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kyler boudreau
http://www.theatereleven.com
ph.310.425.2231 -
[kyler boudreau] “1) You have to have Quicktime Pro 7 (not that mind numbing X player Apple laid upon us with Snow Leopard). If you have Pro you can do it – promise. I do it all the time for clients.”
Hi Kyle,
This may be the problem. I have QT 7 but still in Leopard.
Cheers,
rafael -
Sorry lady and gent – I just checked my settings and realized something:
1) Your crunched down version much be H.264 for QT Pro to allow pass through on the MP4 export. If you have another codec (even if it is an Apple codec like pro res) QT Pro will not allow pass through to be an option.
So you just helped me learn something. =) Try that and see if you get anywhere. My workflow all the time is Pro Res/Pro Res HQ to H.264 via Compressor to MP4 via QT Pro 7.
Again, this MP4 wrapper just helps you with playback options. Try it out. Compare embedding QT and MP4 whether stand alone of with Flow Player. MP4 streams, plays in every OS easier, etc.
_______________________
kyler boudreau
http://www.theatereleven.com
ph.310.425.2231 -
[kyler boudreau] “1) Your crunched down version much be H.264 for QT Pro to allow pass through on the MP4 export. If you have another codec (even if it is an Apple codec like pro res) QT Pro will not allow pass through to be an option.”
Now this is all right.
Rafael
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