8mm Forum: Compression

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Topic: Compression

Will Trenfield
Jedi Master Film Handler

Posts: 506
From: Shrewsbury, Shropshire, UK
Registered: Mar 2016

posted November 27, 2016 06:14 PM

OT I know but some of us will have digitised precious family films so as to edit them and then transfer to DVD, post on YouTube to share with others or just store on a hard drive. I've used VirtualDub and I'm just wondering what compression others would recommend for the best quality.

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John Yapp
Expert Film Handler

Posts: 148
From: Telford England.
Registered: Dec 2011

posted November 30, 2016 09:49 AM

Hi Will,
I've always used "Uncompressed" until the final edit. This can lead to 30-40gig file sizes but another option is to use the lagarith lossless codec. It works fine with vdub.

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Bill Brandenstein
Phenomenal Film Handler

Posts: 1632
From: California
Registered: Aug 2007

posted November 30, 2016 12:00 PM

I highly recommend Lagarith because it's compatible with both 32-bit and 64-bit operations, and it's truly lossless.

However, it's a bit awkward for archiving due to the file size. XVid is a good open-source codec compatible with VirtualDub, and with the quality slider set to "1" (maximum), is decent looking and space-efficient. But consider that a lossy destination-only solution, just like mp3 or Dolby Digital is for audio.

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Steve Klare
Film Guy

Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003

posted November 30, 2016 12:04 PM

I am too much the car guy here.

-I saw "compression" and I thought you were talking about cylinder heads, domed pistons and high octane gas!

(Carry On!)

--------------------
All I ask is a wide screen and a projector to light her by...

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Will Trenfield
Jedi Master Film Handler

Posts: 506
From: Shrewsbury, Shropshire, UK
Registered: Mar 2016

posted November 30, 2016 06:57 PM

LOL, Steve. Thanks John and Bill. I started digitising my films using the old method of projecting onto a white card (I now know that a grey one would have been better). The image was captured using an old analogue camcorder with the output fed to a Dazzle analogue to digital converter. The software with it was designed to transfer video tape recordings to DVD but you could save to a hard disk instead so I ended up with some hefty VOB files which I converted to AVI format. When editing with VirtualDub, I've been using the X264Fw codec which produces compact files suitable for uploading to YouTube. I tried using the ffdshow codec which resulted in far larger files. The Largarith codec seems to do the same and both are considerably larger than the original AVI one. The XVid one produces only slightly larger files than The X264Fw one when I experimented. I take it that it's a question of the quality you what to achieve for whatever you want to do with the video files.

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Andrew Woodcock
Film God

Posts: 7477
From: Manchester Uk
Registered: Aug 2012

posted November 30, 2016 07:03 PM

No Will, you were right in the first instance, white card is THE best for traditional projection...why would anyone want anything else???????

--------------------
"C'mon Baggy..Get with the beat"

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