Change Playback Frame Size in RM

[LiFe]

Chello, Chello,
Is there an easy tool that will let me change the playback frame size encoded in the header of RM/RMVB files?

I want to test encoding anamorphically.

Thanks.

LiFe.

[Sirber]

HEX Editor, or flag in mkvmerge :D

[LiFe]

I'd prefer not to use a hex editor, (I'd prefer it was integrated into that RM info shell tool that was around).

But if hex editing is the only option, can I please have precise instructions on how to do it.

LiFe.

[Sirber]

I never done it before. Maybe D-C or gabest can help you with this.

[karl_lillevold]

This is an FAQ by now, and I am really looking forward to D-C updating the shell extension tool to include this functionality. In the meantime, let me try to describe which bytes need to be edited.

Open RM file in hex editor. Look for the ASCII string 'VIDORV40'. The next two bytes are the width, and the next two the height. For instance, I have one test file that's 480x256. The 4 bytes after VIDORV40 are: '01 E0 01 00'. Simply edit these to whatever you would like the new display size to be. If I would like this to displayed at 640x480, I change those 4 bytes to '02 80 01 E0'. Usually you probably only want to change the height to correct the aspect ratio.

[LiFe]

Ugh too hard - hurry up D-C with that shell tool modification!

[karl_lillevold]

Yes, converting from decimal to hex can be a little tricky :scared:
I use Bill Menees' RPNCalc myself, but I am sure there are plenty of tools... D-C told me he is very busy these days, so the shell ext update might take a while to complete.