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Prores 422 to H.264 Compression SLOW
I thought I would tinker with the prores 720p 59.94 HQ codec while working with my first HD project. Everything is working beautifully in FCP and the file sizes are SMALL. I captured a 30 minute tape at 720p 8bit uncompressed and the file was 190gb. I recaptured using prores and the file was only 48gb – NICE!
Now I am trying to use compressor to compress 4 minutes of this footage to one of the HD DVD h.264 720p presets and so far I am at 30 minutes with 50% done. So, I am looking at 1 hour for about 4 minutes of pro res to H.264 video.
Is this normal?
Also, when I make this “HD DVD” in dvd studio pro, will it play in normal desk top players or will it only play back on my Mac Pro with the Cinema Display?
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6 Replies
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[blueflamez] “Is this normal?”
Yes. H.264 is a seriously processor intensive codec to encode. Anytime you are using this it will take some time. BUT, the quality of your final product will be fabulous.
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Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey -
Thanks, Wayne
Has anyone heard about pro res being sluggish for transcoding? Does 1 hour per 4 minutes sound normal for ANY codec going to H.264?
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Yeah… pretty standard for an HD conversion. Or at least that’s been my experience.
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Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey -
[blueflamez] “Has anyone heard about pro res being sluggish for transcoding? Does 1 hour per 4 minutes sound normal for ANY codec going to H.264?
“ALL compressed codecs being transcoded to a differing type of compression take more time than if you are working with an uncompressed, self contained file.
If you sent direct from FCP without first rendering as self contained video,
the file sent from FCP needs to be rendered, then decompressed and then re-compressed in the new codec (H.264) and that is CPU dependent.gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows -
Are you using compressor or quiktime conversion. My render times with quicktime conversion in either ProRes HQ or DVCPROHD 1080i/29.97 are pretty quick. 1 minute of HD ProRes HQ took me about 4 minutes using quick time conversion with best quality settings.
This is on a dual quad core, but my DP 2ghz also does it pretty fast.
jw -
That is interesting Jim. I was using compressor on an 8-core Mac Pro! I will try it again on Monday using quicktime conversion…I don’t like compressor much anyway.
Thanks!
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