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Compressing the cmpression
I need upload a high quality H264 or Mp4 of a quicktime pro res file. The high quality is about high detail and many dissolves happening. So I have an 11 gig file that I need get to under 5 gig and I simply went into quicktime conversion and output an H264 file which came in at 23 gig.
So I tried various things – direct FCP studio output – send to compressor etc and if I keep the quality high, I just get big files (apart from using a compressed file from pro res) what am I doing wrong and what can I do to get a reasonable 5 gig file?
Would it be worth changing the pro res into something else to start from?
A long term DP – likes 35mm and HD equally – changing with digital media – Began as a commercials editor !
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6 Replies
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Terry,
my workflow is to:
1) output from FCPX as prores 422HQ
2) bring it into Compressor and use the Apple Devices>Apple Devices HD(Best Quality)
3) encode
4) change extension (if needed) from .m4v to .mp4Initial file size: 3.22gigs
Final version: 120megs
Dimensions: 1280 × 720
Codec: AAC, H.264It’s all about your settings though, especially your bit rate, IMHO.
Lawrence
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It’s very important and very basic math to understand compression and file size. Mostly math one might learn in middle school (junior high school).
File Size = duration x data rate.
Changing the data rate changes the size. -
That’s close to what I did but s I say got 23 gig from an 11 gig file. As to the next post – yes of course – normally simple maths, but I got different.
A long term DP – likes 35mm and HD equally – changing with digital media – Began as a commercials editor !
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That was my point really – I’ve been doing this since 1976 – from analog forward. But this time I got 23 gig from 11. So I wondered at that – are there any people out there that had this kind of anomaly?
A long term DP – likes 35mm and HD equally – changing with digital media – Began as a commercials editor !
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Terry,
Maybe something corrupted in your project?Have you tried copy/pasting into a new project and trying again?
Lawrence
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I’ll do that thanks…
A long term DP – likes 35mm and HD equally – changing with digital media – Began as a commercials editor !
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