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View Full Version : ? Shrinking Multiple AVIs to Target Total-Size Then Joining to Originals

Synetech
4th April 2008, 23:20
Hi,

I have a bunch of AVIs (of various lengths/sizes) that I need to re-encode so that they take up less space. The after-size of any individual video doesn’t matter, as long as the total size of the post-processed videos fits the target (although I would like them all to be of relatively equal quality).

What is the best/easiest way to do that?

Also, after they have been shrunk, I need to join each one to another video. The original video has the same properties (size, frame-rate etc.), but obviously would have a different (higher) bitrate since I am shrinking these ones. Is that possible? Can you join two videos of differing bitrates?

Thanks a lot.
Southstorm
5th April 2008, 00:00
Find an encoding GUI that suits you from here:
http://forum.doom9.org/showthread.php?t=129748

You can join MP4's using MP4Box/Yamb
Synetech
5th April 2008, 00:12
Find an encoding GUI that suits you from here:
http://forum.doom9.org/showthread.php?t=129748
Thanks, but I don’t know what suits my needs, that’s why I’m asking.

You can join MP4's using MP4Box/Yamb
I know how to join AVIs, but I don’t know if you can join AVIs with different bitrates.
Southstorm
5th April 2008, 00:33
These programs all do variations of what you want, and everyone has different tastes, so try a few out. We can't be the judge for you.

As far as the bitrate theory, I'm 99.9% positive that you can merge as long as the files are of same resolution, framerate, and level/profile.
makikes
8th April 2008, 14:20
Why don't you try to do a Quant 2 (or other number) encode of all individual files? That way you would know how much each file would weigh in the total, and you could then determine the bitrate for each piece and guarantee that the quality remains roughly the same.
Synetech
8th April 2008, 23:48
Why don't you try to do a Quant 2 (or other number) encode of all individual files? That way you would know how much each file would weigh in the total, and you could then determine the bitrate for each piece and guarantee that the quality remains roughly the same.

I believe that is the same advice I have been getting from others. I have been told not to transcode them, but rather to re-encode them (most people suggested DVD Rebuilder). I am trying that out currently, but I need to free up disk space.