Deleting dropped frames

[FOO]

Does anyone know how to delete dropped
frames from a captured AVI without modifying
the audio. ?

[hwoodwar]

Dropped frames are dropped frames, they were never recorded in the first place. In general they are dropped (not recorded) to allow the audio and video to stay in synchronization (someone else may have a different reason why, or be able to expand on my reason.)

Now damaged or corrupt frames are something totally different.

[FOO]

If you look at an AVI with Vdub you can see dropped frames or search for them with "next dropped frame" (}). How can this be if they aren't there ?
I believe that there is a frame header with a "dropped frame flag" set.

I capture AVI with Radeon 8500 hardware. I sometimes get dropped frames due to other activity on the system. The capture software does not insert the frame data but does insert a dropped frame header when it can't keep up. It also drops 33ms worth of audio. (to stay in sync)

Vdub apparently replaces dropped frame headers with the previous frame. Every time this happens, the video gets 33ms later.
If you delete a dropped frame, Vdub obligingly drops 33ms of audio, so you can't fix it like that.

The two programs need to be consistent, either keep the audio or ignore the dropped frame.

What i do is fire up Vdub, save the audio to a WAV, delete all the dropped frames, and then frameserve the video to a NEW instance of Vdub and use the previous WAV file for its audio input. This puts everything in sync and you can then process and frameserve this to an encoder.

The only thing wrong with this is deleting all the dropped frames manually. I have had situations with one dropped frame every second.
(Shutdown timer running)
This is not enough to ruin the movie so I want to save it but try hitting SHIFT}DEL 3600 times.

Anyway, I want to delete dropped frame HEADERS automatically without
screwing with the audio. Maybe Avisynth ?