Autogk + video bitrate

[adsman]

Is there anyway to manually specify the video bitrate in AutoGK? Every time I do an auto conversion, AutoGK automatically specifies the video bitrate. How can I tell AutoGK to set to something like 141kbps on the video bitrate?

[manono]

Hi-

When you specify the size, you are specifying the bitrate, since filesize directly correlates with bitrate. When you're done, you can check in GSPot to find the bitrate, or before encoding, you can check a bitrate calc to find the bitrate for a given size.

But to answer your question, there is no way to specify a bitrate directly.

[FulciLives]

I set the file size and after the comp test if the compressibility percentage is lower than 90% or way over that I stop the process and start over with another size and I keep doing that until I get a comp test value of 90% - 100%

After a while you get a knack for it.

- John "FulciLives" Coleman

[adsman]

I set the file size and after the comp test if the compressibility percentage is lower than 90% or way over that I stop the process and start over with another size and I keep doing that until I get a comp test value of 90% - 100%

After a while you get a knack for it.

- John "FulciLives" Coleman

So how do the groups release say The Simpsons which have a file size of 179MB on average with a video bitrate of 134kbps?

[FulciLives]

I always use a fixed width of 640 for "best" quality.

You will find that many of the things you are talking about are lower in resolution than that because the lower the resolution the better the bitrate is spread about meaning you need less bitrate because there is less resolution or "stuff" to encode.

The problem is when you go to blow it up it is being resized a lot at times.

- John "FulciLives" Coleman

[manono]

So how do the groups release say The Simpsons which have a file size of 179MB on average with a video bitrate of 134kbps?

It's not 134kbps. You're using that crappy Windows bitrate checker. Open the AVIs in GSpot and get the real value. It's probably 850 or so. And they're using lower resolutions than FulciLives is suggesting.

[FulciLives]

I backed up SUPERMAN RETURNS to XviD AVI using the 5.1 AC-3 audio track and a size of 640x272 and to get autoGK in the 90% or better comp test range I used a file size of 1650MB or something like that. I think the comp test was roughly 95% which is good enough for me.

I burn the AVI files to a DVD-R and play them back on a Philips DVP-5140 which is a MPEG-4 capable DVD player.

A MPEG-4 AVI can safely be up to 2GB in size.

- John "FulciLives" Coleman

P.S.
Here is a shot of GSpot with my SUPERMAN RETURNS XviD AVI loaded: