Free AVI tools: AVIFrate - avi frame rate changer
AVIFrate is an utility that allows you to change many important fields
in an avi file header. Most often you need to adjust the frame rate of
the avi video stream. The frame rate is determined when you play a file
by simple formula:
where fps is "frames per second" playback speed,
dwRate and dwScale are fields of the video stream header
After you change these values, AVIFrate will re-calculate frame rate
and will allow you to write it directly into the file header.
You can undo changes made until you exit AviFrate. This allows you
to try out some values before you decide to keep them.
Next important thing to change is so-called fourcc field. It
is used by Windows to determine which codec should be used to
decompress video during playback. There are few codecs that have different
fourcc field but, in fact, they use the same compression scheme.
If you have some other codec that differs from mentioned in an avi header,
you may try to change these four characters to meet the expected codec.
What makes the AVIFrate from AM Software unique ?
Now here is a command-line version of AVIFrate
for batch processing of avi files.
- it allows you to undo changes made until you exit. So, there are
less chances to damage your avi files by wrong settings
- it does a few checks before it starts file change. This will prevent
you from editing of winword.exe, for example :)
- it has the smallest seen executable size for now. Just think
about greatly decreased download time and enjoy!
It is a Win32 console application intended to run from a bat file or
maybe in FAR file manager (probably it is the best one, and the only
one working in a text mode console window).
AVIFrate is freeware. You can freely use and distribute it
provided that application files are not changed.
download avifrate.zip 12.4 kb
download avifrate2009.zip 12.4 kb (see readme.txt for changes)
batch processor to change many avi files fps at once
download avifratecmd.zip 21 kb (see readme.txt for changes)
Just unzip and run. No install required, no specific runtime DLL's need.
If you like this software, you may donate us via PayPal :)
Copyright 2000, 2012 AM Software