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Apple Pro Res Question;
I have a ton of files to convert to Pro Res, all 1920×1080 HD, but shot with (3) different cameras. I used Streamclip to do a test on one file that was 45.4 mb originally. After the 422 conversion, that same file now becomes 363.3mb! That 8 times bigger! I have used this program before, but that seems awfully big to me.
Is this size growth correct? Am I clicking or selecting something wrong in the 422 choices? Under the 422 selection, there are two choices that are identical, but I don’t know the difference between them….Jonny Cates
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4 Replies
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[Jonny Cates] “Is this size growth correct?”
Most likely.
1 hour of ProRes 422 1920×1080 29.97fps = 75.3GB
1 hour of ProRes HQ 1920×1080 29.97fps = 112.4GB
1 hour of ProRes LT 1920×1080 29.97fps = 52.6GBIf the frame rate is lower, say 23.98, then the file size will be lower:
1 hour of ProRes 422 1920×1080 23.98fps = 60.4GB
How long of a clip do you have that’s 363MB? The only way I get something that small is if I choose ProRes Proxy, and the clip is one min long 1080p 23.98. One min of ProRes 422 1080i 29.97 is 1.3GB.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
Shane… the clip I was testing is 10 seconds long. It’s size before conversion is 45.4MB. After, 363MB.
Original clip info…
Dimensions: 1920 x 1080
Codecs: H.264, AAC, two channels
Color Profile: HD (1-1-1)
Duration: 00:10
Audio Channels: 2
Total bit rate: 35,350
Movie Information: JVCFPS on camera was 60i
Jonny Cates
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Thanks for the info Dave. I see yet another, external hard drive in my future.
Jonny Cates
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Yup…all very normal. Bigger hard drives are in order.
Shane
Little Frog Post
Read my blog, Little Frog in High Def
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