Virtualdub: DAR?

[higgins327]

Is there a way to change DAR flags with VirtualDub?

I know there's Mpeg4Modifier, but I have more than a hundred and fifty files to process and Mpeg4Modifier has no batch wizard, while VirtualDub does.

Any other free software with a batch wizard will do as well.

[sambat]

There's a command line version of Mpeg4Modifier that might work.

http://forum.doom9.org/showthread.php?t=117553

Save the bat file in the same folder with all the avi files.
It creates a folder called 'DAR' and copies the modified files to it.

@ECHO OFF
md DAR
FOR %%I IN (*.avi) DO "C:\Program Files (x86)\MPEG4Modifier\mmcl.exe" --dar custom 16:9 "%%~fI" "%%~dpIDAR\%%~nxI"

[Cornucopia]

Is there a way to change DAR flags with VirtualDub?

I know there's Mpeg4Modifier, but I have more than a hundred and fifty files to process and Mpeg4Modifier has no batch wizard, while VirtualDub does.

Any other free software with a batch wizard will do as well.

Yeah, but Vdub only exports to AVI, so it wouldn't help at all with MPEG4. Maybe you're thinking it could do it with DivX/Xvid - it can't, but I'm guessing that some OTHER app might be able to read the video codec's flags/headers and modify them.
AVI's as containers don't really have an understanding of PAR or DAR, it just relies on the codec to set or read those.
Maybe if you demuxed and remuxed to MP4, other apps might be available? (I'm S-T-I-L-L! at work and want to go home after being here for 12 hours, so I'm not going to do a check for you about which ones might, sorry).

Scott

[higgins327]

AVI's as containers don't really have an understanding of PAR or DAR, it just relies on the codec to set or read those.

How come Mpeg4Modifier fixes DAR in AVIs then?

There's a command line version of Mpeg4Modifier that might work.

I'll give it a shot, thanks!

[jagabo]

AVI's as containers don't really have an understanding of PAR or DAR, it just relies on the codec to set or read those.

How come Mpeg4Modifier fixes DAR in AVIs then?

Mpeg4Modifier sets the PAR/DAR in the MPEG 4 (Xvid) data stream, not at the container (AVI header) level. Containers like MKV and MP4 have PAR/DAR flags at the container level. These can be used to override the flags in the video data.

Actually, AVI supports DAR flags in the ODML extensions. But I've never seen any program use these.