Quality Xvid Bitrate Table (500kbps to 3000kbps)

[edurm]

Using 2 pass Xvid I would like to know what would be a good video bitrate value to a standart action movie.

is this right?

0 to 500kbps = sux
500 to 750 = lowest quality
750 to 1000 = low quality
1000 to 1250 = good quality
1250 to 1500 = Very good quality
1500 and above = DVD like



I usually use 64 to 128 kbps ABR MP3 Audio

What video bitrate should I aim to?

[tigerman8u]

You would have to take into account the resolution and your settings also. Lower resolutions can use lower bitrates. What are your search settings set at ? IMO the best thing to do is encode a small portion with different settings/bitrate and see what is acceptable to you. Also what is your source. Garbage in -garbage out. A good clean source such as a dvd rip won't have have as much noise. Noise eats up bitrate IMO.

[Leo 69]

It all depends on the source and the settings.
1500 kbps (and above) can easily look like garbage, while 500 kbps may look very cool. Believe me, after you spend some more time with Xvid (and other codecs), you'll stop thinking in your way.

[edurm]

What are your search settings
I don't know, I'm using Auto_Gk to RIP and Encod DVD movies - How do I figure out my search settings ?




1500 kbps (and above) can easily look like garbage, while 500 kbps may look very cool.
????? But it sounds non-sense to me. You're saying that I can obtain better quality with lower bitrates when encoding a DVD-RIP ? Well I see I still have a lot to learn


:thanks:

[Didée]

Leo's sentence should have read:

For some sources, 1500 kbps (and above) can easily look like garbage, while 500 kbps may look very cool for some other sources.

Common examples: Keeping full resolution and doing no filtering, with "The Others" you might have problems to reach 1500 kbps at all (from the lower side). Wheres "Saving Private Ryan" will quickly eat 1500kbps for 2nd breakfast, but keeps being hungry.

[edurm]

I Think I got the point


All depends on the amount and intensity of action of a movie (scenes changes)


So if you take a movie that is almost like a “picture”, for example, “Gone with the wind” and use 600kpbs (2 pass) You may have the same (or near) video quality if you encode “Starship Troopers” with 1000kpbs (2 pass)

[jon.schaffer]

All depends on the amount and intensity of action of a movie (scenes changes)
It's one parameter, but the noise of the picture (e.g: noisy Spielberg movies like Saving Private Ryan) is a very important one too. Hence the big number of denoising filters...

[edurm]

But What is noise on a vídeo ?

:confused:

[gircobain]

noise Pronunciation Key (noiz)
[...]
Physics. A disturbance, especially a random and persistent disturbance, that obscures or reduces the clarity of a signal.
[...]
In portuguese, it is called "ruído" ou "interferência", and commonly, "chuvisco"

Certain films, like the aforementioned Saving Private Ryan, may have noise added deliberately, while others may not be so clean from the source, like old movies and analog captures

[edurm]

Obrigado ai Gircobain :D

[Sharro@Home]

Oh Well,

If life was so simple... try to do a disney animation (max 5 years old) at your dvd like bitrate and you will be posting here about not reaching you desired size even if you use Dvd resolution.

Some movies will be Dvd like at 1000Kbps others only at 1800Kbps judging by your criteria.

Last week I did an animation (1H20 duration) that with a 1000 Kbps I almost reached the size of my first pass.

As regards to you question, I would do a first pass, look at its size and then decide the size that I want my movie to be, personally I never go above 1950mb including ac3 track at resolution between 672 and 704 using HVS best matrix.

Things are just not so linear.

All the best,


Sharro

PS: Não se deixem enganar assim.

[Soulhunter]

But What is noise on a vídeo ?
From a dictionary...


Noise: Unwanted or extraneous information that degrades the reproduction of an original. In a video signal, noise may appear as specks in the image that were not in the original but introduced during transmission or reproduction.

Grain: The relative coarseness of an image that results from the size of silver particles in the emulsion. Grain is usually invisible to the naked eye. It becomes more visible as a negative is enlarged. Grain is generally more pronounced in high-speed emulsions.

Also have a look at this (http://forum.doom9.org/showthread.php?t=93744) thread !!!


Bye

[edurm]

:thanks: