cropping a timer off a AVI file???

[spl1ffman]

hi all,

I have a video file which is in AVI format. When i played the file it had a black box on the top of the screen , i presume where subtiles or a timer had been.

I tried this method to crop the picture:-

1) Opened the file file using VirtualDubMod (got a message about improper VBR whatever that means i just clicked yes).

2)I clicked on Video ==> filters ===> nulltransform and i cropped the picture.

3) i then clicked on video ==> compression===> and choose XVID codec

4) i selected direct stream in video

5) saved as AVI

when i played back the new file it was cropped correctly but totally out of sync ..

What did i do wrong ??

thanks in advance

[Paulcat]

Your audio is Variable Bitrate (MP3?), you should demux the audio stream and remux it back afterwards to maintain sync.

[spl1ffman]

thanks for the reply...

i go searching for a guide on demuxing

[spl1ffman]

how do i remux it back?