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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Has SHEERVIDEO been discussed before?

it's a high quality lossless codec, that's also fast. It's good software. It's designed, most probably for video gamma imagery but would work with whatever you throw at it.

Your usage of Linear light terminology is probably incorrect. You'd never really want to encode linear at 10bit or you'll get awful banding in the shadows.

Graeme
 
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Graeme Nattress said:
it's a high quality lossless codec, that's also fast. It's good software. It's designed, most probably for video gamma imagery but would work with whatever you throw at it.

Your usage of Linear light terminology is probably incorrect. You'd never really want to encode linear at 10bit or you'll get awful banding in the shadows.

Graeme
Click to expand...

I just assumed it was probably linear in some way, they don`t mention log either way on their webpage. I`ve never used HD cameras actually, do they do log coding?, I have been assuming some record/play 10bit linear, and that this codec was probably aimed at this? (I just don`t know) I was waiting for HDV to go away, and haven`t kept up with consumer products as I can`t afford to keep fixing them and upgrading. I`d love to find a lossless codec that handled 16bit RGB, as I`m into baking and shaking, more than meta-dating.

ps,
I`ve been upgrading my own filters to work with 16bit data and have been converting DPX into 16bit PhotoS. raw files to !quickly! get data into my software for testing. Thats raw as in "no header interlaced 16bit RGB", rather than a camera format. I noticed PS is in 16bit mode once the 10bit dpx is loaded, but if I "save as" a copy, again as a new, renamed DPX, the new file is only a few hundred bytes larger than the original?, making me think its saving it as 10bit automatically, and perhaps never even converted it into 16bit, before saving the new copy. Anyway, I need to load DPX files in directly to start getting ready for PDlog info to hopefully become available, and so I can release a freeware tool that may be useful to others.
My question is this, whats the bit packing like in the 10bit Redcine DPX export, do you know? I have the dpx headers now, but haven`t yet understood the packing method used for the bits, I haven`t experimented yet either, as I`m struggling with everything 'psuedo log' and other transistions I`m making, could you elaborate at all on the packing/ordering, and save me struggling a bit :waaa: on the easier stuff. The description I read wasn`t that clear to me (the block alignment to be precise), although the header info was. I`d really appreciate any info.

ie, RRRRRRRRRRGGGGGGGGGGBBBBBBBBBBPP , where P might mean packing, and RGB

or
RRRRRRRRRRGGGGGGGGGGBBBBBBBBBBRRRRRRRRRR
 
Very little work is actually done in linear. But a lot of people refer to video gamma as linear, which it is not, hence my comment.

Graeme
 
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Graeme Nattress said:
Very little work is actually done in linear. But a lot of people refer to video gamma as linear, which it is not, hence my comment.

Graeme
Click to expand...

Yes , the embedded gamma is what I keep forgetting about. I`ve dug a bit deeper into the bitjaz software and I have read about their syncrony colour conversion system that appears to go up to 16bit precison, and allows losslessly converting between colour spaces, which I assume applies to the codec, although the log stuff will no doubt clip when converted to linear (vg etc). It looks interesting indeed, and if they can handle dpx style log then even more so. Its reassuring to hear your praise, any vested interest? :detective2:
 
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obin said:
if only we could edit with it! in PC land!
Click to expand...

They have a windows beta version of the codec, which I have downloaded (free registration). It might allow you to work in Premiere and After Effects eventually, which are both better than FCP in terms of support for higher bit depth processing, although I don`t have either installed at the moment, and don`t have Red footage access either. The codec seems to be working fine.
 
the 10bit QT version on Windows is supposed to work in After Effects 7 or newer.
 
Sheer video is the only codec I found that never gave us issues when going Mac <-> PC or RGB <-> YUV. It's conversions are as good as it gets!

Regards,

Uli
 
I brought up Sheer Video a while back on the forum. It looks as if Andreas a Sheer is still pumping out improvements/updates:

http://bitjazz.com/en/support/sheervideo/release_notes.php

We have used sheer for archive and playback for 3 years now. It's a great product. I have just downloaded the update and will play around with it.

The reader/player is free so you and cross platform so you can send to clients.

https://www.bitjazz.com/en/shop/sheervideo/

Free trail for software at the above link as well.
It also has Ouput module templates for AE and Easy setups for FCP
Very fast encode rate.
Dave
 
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