nandub 2-pass files

[benderman]

As far as I know, the nandub's first pass creates a stats-file and a virtual video-file (temp.avi) that dosen't contain any information. Sometimes the nandub status-window showes that the first pass allready has an average bitrate that is lower than the bitrate that I wanted for the second pass. In that case it would save half the encoding-time if I could use the avi from the first pass. The question is if there is any possibility to force nandub to create a real avi during the first pass.

[james west]

nandub

What for? The purpose is two have 2-pass not 1. If you have the avi at the first pass why use a 2 pass?

[benderman]

@james west: Allready said that in my 1st post. The 1st pass is done with maximum quality and the picturequality can't get better in the 2nd pass. If the avifile from the 1st pass has the filesize that I need (i.e. 700 MB or something like that) the 2nd pass is useless.

@all: I found it! If you copy the 2 passes to the job-control you can edit the file "VirtualDub.jobs" in the nandub directory with a text-editor. If you find the line "VirtualDub.video.NoAVIOutput(1);" in the 1st-pass-data you can simply change it to "VirtualDub.video.NoAVIOutput(0);" and the "__temp__.avi" will contain the full avi (without sound). Only problem: It may not have very much keyframes (depending on the codecs internal keyframe-routines) and you will have to insert the sound seperately.

[Enchanter]

Thx, Benderman. I'll use this method the next time I find something similar to your situation.

[UncasMS]

does anyone know if editing some lines in any file would enable constant avioutput for the 1st pass?

i wouldnt mind a couple of hundred mb for a first-pass-avi but every now and then it might be very usefull exactly as benderman proposed!