Edit AVI Header

[Guiboche]

Hello,

I am aware the AVIEdit has a great option that allows you to edit the AVI header of files.

Unfortunately, you can only edit 1 AVI file at a time.

Is there a program (preferable freeware) that can edit AVI headers including multiple files at one time?

Thanks in advance

Guiboche

[Soopafresh]

What specific information in the header were you planning on changing?

[Guiboche]

The frame rate.

But I can't change it any other way, because framerate is actually based on a fraction. And the only way to do that is in the AVI header:

[Soopafresh]

Yup, you can possibly try AVImaster . I think the program was recently abandoned, so give me a minute to find a link.

There are no links to it anymore, but here you go. Command line, IIRC.
avimaster.zip


Avimaster -fv29.97 *.avi output_*.avi

[Guiboche]

Unfortunately that tool won't work for me. Not only will it not output the proper frame rate I want, but it will recopy over all the media.

29.97 isn't the framerate, but part of the fraction:

2997 / 125 = 23.976

Currently, most applications output at:
24000 / 1001 = 23.976023976023976023976023976024

But that causes a sync rounding error to 23.98 (specifially in Premiere Pro). This also causes the audio to go outta sync.

So I need to change scale = 125 and rate 2997 (like the image above).

Currently, I'm using AVIEdit for this, but it can only do 1 file at a time. And I have LOTS of media, so I was hoping for a way to change all of them at once.