[MEncoder-users] Capture tv signal with mencoder

[The Wanderer]

On 06/15/2009 03:13 PM, mierdatutis mi wrote:

> Thanks!
> 
> I understand that mpeg2(mpeg)  must have more size to can have the
> same quality that mpeg4 (avi).

You can put MPEG-4 video in an MPEG container as well as in an AVI
container (and you can put MPEG-2 video in AVI, as well). But yes,
MPEG-2 will in general be worse quality per unit bitrate than MPEG-4.

> I have a program that I input a size that I would like to have the
> recording and the program caculates the bitrate by this way:
> 
> mb*1000000*8/minutes*60/1000
> 
> So if I would like that a recording have 300mb the bitrate is 1333.
> 
> I would like to do this, but recording in mpeg, not in avi. How could
> I calculate the bitrate, knowing  the size that I like have in the
> mpeg file.??

As Jan said, bitrate calculations don't depend on the container (except
for container-specific overhead, but that's not likely to make much
difference in most cases). Just add '-of mpeg' to your basic command
line, without changing any other options, and there's a pretty good
chance that you will get what you're after.

-- 
       The Wanderer

Warning: Simply because I argue an issue does not mean I agree with any
side of it.

Secrecy is the beginning of tyranny.