Export a file to the same size as was imported?

tmnt

tmnt

King of Australia
I'm trying to export my DVCPRO HD AVI (I'm editing 1080/24pa with edius) out but when I select 'none' for compression type my file is about ten times the size? What am I supposed to select for DVCPRO HD AVI so I'm not losing anything on the original file?

I'm using AE 7 Pro.
 
oneinfiniteloop said:
What codec are you exporting?
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He said he was exporting using "none", so I would expect to have that kind of file size jump.


tmnt:

Even when working with regular old (now getting to be low rez) NTSC DV, your clips with the DV codec run at about 3.6 megs per second. But if you were to create just one DV NTSC frame from the preset menu in Photoshop, and save it as a .tga (or something else uncompressed) it would be about 1.1 megs, meaning if you exported using no compression, you would have 1.1 megs times 30 fps, an increase in file size by factor of 10.

It is a little bit of a pain, but that's the price of rendering uncompressed.

Best bet is to export with a lossless codec, something like Quicktime with the Animation codec. The files will still be huge by comparison, but will be at least half the size of .avi uncompressed.

I wish I could tell you there is the "Grand Codec that Trupms Them All", which gives you small file sizes and perfect video, but that isn't the case. Prepare for huge file sizes, get extra disk space or spend 20 bucks on an external drive enclosure and 50-60 bucks for a 300 gig drive, and go that route.

With the files you are working with, storage is rapidly going to be a problem. Either work in chunks, backing up everything you need and then using it only when you need it, or invest in storage. There is really no other way, if you don't want to keep compresing your work.

Oh, and the Quicktime .jpg (not motion .jpg) option gives suprisingly good quality at small file sizes, and a big shout out to Elton for showing me how to make the most of that codec.
 
Matt Grunau said:
He said he was exporting using "none", so I would expect to have that kind of file size jump.
Click to expand...

That's what I thought at first, but reading his second sentence he makes it sound like the original is 3 times bigger, not the rendered, since he is implying that he wants something that isn't "losing anything on the original".

A rendered file from AE being 3 times bigger than the original is normal fare for AE. Quicktime PNG is a good, visually lossless codec to render to.
 
Ah, thanks guys. I thought I was doing something wrong - didn't realize AE exported to 3 x the original file size.

I'm have a heap of disk space so that's not the problem, I just wanted to be able to compress the final edit with as little compression as possible and didn't want the big file sizes. I shouldn't worry here though, it's only for my 6 min Spyfest flick, was more for future reference.

Thanks again.
 
oneinfiniteloop said:
That's what I thought at first, but reading his second sentence he makes it sound like the original is 3 times bigger, not the rendered, since he is implying that he wants something that isn't "losing anything on the original".

A rendered file from AE being 3 times bigger than the original is normal fare for AE. Quicktime PNG is a good, visually lossless codec to render to.
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Is png a file sequence, or can you use it like the .jpg codec where it is still one contained file?



Ahh hell, I could simply export and answer this myself faster than you will prolly get back to it, but others may want to know. :beer:

png files are the schnizzle. yes, I just wrote that.



tmnt said:
Ah, thanks guys. I thought I was doing something wrong - didn't realize AE exported to 3 x the original file size.

I'm have a heap of disk space so that's not the problem, I just wanted to be able to compress the final edit with as little compression as possible and didn't want the big file sizes. I shouldn't worry here though, it's only for my 6 min Spyfest flick, was more for future reference.

Thanks again.
Click to expand...


Let's clarify: You aren't doing anything wrong. It's simply a matter of which codec you use, for the file type you choose to export as. If you exported and .avi with divX, you will get compression artifacts. What oneinfiniteloop and I were explaining is a way to export that will be smaller than totally uncompressed, and still be losless. Kinda like winzip for video.
 
Thanks Matt, I'll give the Quicktime Animation codec a go. I exported with Edius Broadcast 4 using their 'dvcpro hd (avi)' codec.
 
Quicktime PNG is single .mov, but you can render out PNG image sequences. Usually Quicktime PNG movies come in at about a third or so of the size of the Animation codec. I render them out for high res client previews, especially for FTP transfer.
 
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