What program will convert a MPEG2 video to MPEG4 retaining a playback aspect ratio?

What program will convert mpeg2 or (ATI *.VCR) video to mpeg4 retaining
a playback aspect ratio? Dr.Divx and ATI MMC change a mpeg2 file
playback aspect ratio to video resolution aspect ratio when converting
to mpeg4. For example, Dr.Divx and ATI MMC change a 4x3 playback aspect
ratio of a 480X576 resolution video to a 480X576 playback aspect ratio.
What program allows to edit a mpeg2 or (ATI *.VCR) video retaining a
playback aspect ratio?

 

Linux transcode
from man transcode;
--export_asr C
set export aspect ratio code C [as input]

Valid codes for C are:
1 1:1
2 4:3
3 16:9
4 2.21:1
Linux ffmpeg
-aspect aspect
set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)

 

Thanks for your reply.
Will Linux transcode retain, not change video resolution in pixels?
Will it work in windows?

 

I need a program for Windows.
"Transcode runs on UN*X like systems like Linux, BSD, and MacOSX."
http://www.transcoding.org/cgi-bin/transcode?General_Information

 

If the source code for transcode is availible then you may be able to
install Cygwin (UNIX for Windows) and compile transcode under Cygwin.

Cygwin is free from: http://www.cygwin.com/

I have Cygwin installed at home and work.

Later,
Steven

 

Is the source code for transcode available?
How to compile transcode under Cygwin?

 

Those Linux fanatics can be so annoying sometimes. Changing
OS is hardly an answer to your problem, seldom is.

Most any Encoder will allow you to establish aspect ratio settings
including the playback bit. I use the TMPGEnc Encoders 2.5 & 3.0,
but even most filter based encoders allow such settings.

Linux has its place, but it has a long way to go before it is able to
compete in the general consumer PC market.

Luck;
Ken

 

While we're waxing philosophical, all that has to happen for linux to
explode in popularity is for game developers to start using opengl or
the like...

 

Gordian Knot...

 

True enough, but the fact remains that, in the hands of a skiled user,
Linux is far more powerful than Windows.

 

Bah.

In the hands of a sufficiently skilled user, the operating system is
irrelevant.

 

True also; but the fact remains that, in the hands of a skilled
programmer
any assembly language is far more powerful than Windows, Linux, or any
higher level language.

Luck;
Ken

 

ehh, if you go to the same format.

Nope

 

Well, the few windows fanatics left wil have to go Unux one day too.

You have no clue, *I* use a PC to solve a problem.
Linux has the solution to this specific problem.
If you want to have a relationship wint MS soft, more then a solution to
a technical problem, why not go for a job at MS.

 

Possibly, but much easier to install Linux in a partition and use the other
million or so free programs too.

 

In the hands of a sufficiently 'skilled' president the lives of many are irrelevant.

 

Linux is no language.
It is an operating systenm, partly written in C and guess what, partly in
assembler.
So you get a clue.

 

Quicktime.

 

Just following the chain of your illogic to its conclusion.
( That's a clue so you might catch my point.)

Luck;
Ken

 

Funny thing. I am building a streaming MPEG-4 encoder at work and Quicktime
doesn't obey the pixel aspect value when RTP/RTSP streaming. OTOH Videolan
Client does. I know that's not relevant to this discussion but it struck me
as funny if it handles it properly in file conversions.