Converting RAW avi file

slave1director wrote on 12/1/2005, 7:37 PM


Hi all,


Well this post is kinda of a request that i send to you all asking for any online tutorial that you may know about converting raw avi to ... anything else.

When I render a project through Vegas it always looks fine because I don't change the resolution and I set everything to full quality.

But as soon as I want to convert to Mpeg or WMV that's when the butchering starts. I mean i've been toying with compression for a year now and all the results I got so far are less the satisfactory.

I mean , like a lot of people I visit websites that has video and more often than not their video end up being a a 2 minute/25meg file in mpeg format with stunning quality. They must know some secret that I don't because I haven't been able to achieve that kind of quality so far. All my work end up looking a little too washed up for my own good. The thing is that most of my work will be braodcasted over the web so it needs to look as best as possible.

So please if anyone know any good tutorial that has great secrets about compression method and preferences please reply.

A BIG thanks in advance

Phil

Comments

farss wrote on 12/2/2005, 2:11 AM
I'd start by looking at the levels in your video, most web content I think needs to be in Computer RGB i.e. 0 to 255. Cameras are sort of shooting 15 to around 245.
Bob.
slave1director wrote on 12/2/2005, 12:54 PM

Hi ,


Well from what I have done so far I think the colours are not the primary concern here, the compression is where everything gets messed up.

I used "washed up" in my post as a figure of speech.

Any new suggestions then

Thanks
farss wrote on 12/2/2005, 2:33 PM
Perhaps if you could be a little more specific as to what you feel is wrong or better still if you can point us to an example.
In general though a lot of the final look of video that's being compressed goes back to the initial quality. Lossy compression schemes can end up wasting most of the bandwidth encoding things like noise. Also unnecessary motion will also waste bandwidth. A piece shot on locked off broadcast cameras is going to look way better after heavy compression than if it was shot on a handycam in low light handheld.
Bob.