Bypassing tape for higher res...

rook

rook

Veteran
I read an article in american Cinematographer about a project that messed around with their DVX in order to record right to hard drive and were able to record a much higher resolution.

Now I can't find the issue.

Anyone have any info on this?

-rook
 
This is very cool.

Smart thinking.

Now who can give me the short answer on how you can compress without losing resolution?

-rook
 
rook said:
This is very cool.

Smart thinking.

Now who can give me the short answer on how you can compress without losing resolution?

-rook
Click to expand...

I'm confused as to what you're referring to, as the Reel Stream Andromeda records "UNCOMPRESSED FULL BANDWIDTH RGB (4:4:4) direct from the Analog-to-Digital converters of the camera, before any processing is done".
 
You'd have to use a lossless codec. NewTek used to offer one for standard-def, for working with their Video Toaster 2. Something based in LZW or HuffYUV probably. Any other type of video codec (like MPEG or MJPG) is going to be "lossy".
 
my question is why did they do a USB connection when they probably could have gotten better results with Firewire
 
Pookie, I wish I had more info to give you on it. The article in Am Cin just talked about how a dvx was modified to bypass the tape in order to deliver a better result. I can't remember if they said it was better resolution or less compression.

I was actually hoping some one remembered the same article and could tell me the issue number.

But while we are at it...how can you compress without losing res? I can't seem to bend my head around it.

-rook
 
Still not sure what you mean... Go to the Reelstream site and read it up. The Andromeda output bypasses ANY digital compression.
 
x-angel said:
my question is why did they do a USB connection when they probably could have gotten better results with Firewire
Click to expand...

There has been lots of talk about this...do a search.

Juan is the man at reel-stream.com and he has solved a major issue of getting around DV compression. A hell of an accomplishment.
 
rook said:
But while we are at it...how can you compress without losing res? I can't seem to bend my head around it.
Click to expand...
There are lossless compression schemes, they're just not very compressed is all. Most video compression schemes deliver incredible file-size reductions; a 25-megabit HDV stream is turning a 186-megabyte-per-second raw source data stream (1920x1080x24bppx29.97fps) into a 3.1-megabyte-per-second compressed data stream. That's compression of about 60:1. With lossless you're looking at more like 1.3:1. Not anywhere near the same ballpark, and obviously of very limited usefulness. Lossless may mean the difference between needing an 8-drive SATA RAID and needing a 5-drive SATA RAID, but lossy compression means the difference between needing an 8-drive SATA RAID and needing a $4 tape.
 
Barry, thanks again for your....man, just thanks for being you.

You always deliver with the solid and complete info.

I picture you levitating over a DVX in the lotus position.

You're a guru.

Thanks.
-rook
 
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