Audio filters for VirtualDub

[griff30]

I have been hopeing for a long time that we would be able to add audio filters to VirtualDub. Does anyone else think this would be a good idea? Audio filters, like bass enhance, surround effects , multi-channel encoding and others could be added by creators and users to play with the audio of our AVI/AVS.
If there was support for audio filters, I'm sure the filters would start turning up over night.
Anyone else interested in audio filters for VirtualDub?

[griff30]

A lot of looks at my post and no replies.
Doesn't anyone want to see, at least the ability to have audio filters in VDUB?

[Guest]

VirtualDub does not support audio filters. Are you proposing to modify it to do so? If not, then your post has little point and it is not surprising that it has received no replies. VirtualDub has been around a long time and if Avery wanted to support audio filters, he'd have done so. If it was easy, someone else would have done it.

[griff30]

Are you proposing to modify it to do so?
Yes I was proposing to do so.
Just a normalizer at first, but it seems no one is interested but me.

[Ookami]

IIRC, the modification at http://www.virtualdub.net has some audio filters and tweaks!

BTW, I'm interested in everything that will make VirtualDub (or any tool, that is) better :) .

So, if you want to make something like that be sure that it hasn't been done already ;) .

Cheers,

Mijo.

[easyfab]

Yes, audio plugins would be great.
I do some Tv capture and i always extract wav to normalize with namp.
A normalize filter in VB would make it easier and faster.
griff30 i'm very interested by your project.I can't code but i can help you for testing if you need help.

[griff30]

The Vdub virsion listed above was just what I was looking for.
Someone had started a filter pack it that version, saves me a lot of time.
Thanks Ookami!
With work this week, it's gonna be hard to find time but hopefully by the end of next week or two I'll have something very beta.

[guirlle]

What about the stability of the program?

I'm thinking to reccord some programs whith out supervision, and left the computer on for 1 month...if I save 30 min each 'working day' can I hope that when I returns, the programs will be recorded (if not all, almost...)

I Know that this depends each computer but my computer NOT use to hangs...I just want a estimation (somebody who had used it for something like that), becaouse I have not time to make my owm tests and becouse if it works....

One thing more...what means active daily, restar is:

Thanks

[Ookami]

Thank you griff30 for making VirtualDub better.

BTW, there are a few others VD mods out there, maybe you should check them out also. Maybe you can stea..., er, get some ideas from there ;) .

From the capture FAQ:

30.) There are more and more VirtualDub modifications, is there a list somewhere?

Sure. Here . Altough not all of these are really useful for capturing only.

Andreas Dittrich's sync modification : http://www-user.rhrk.uni-kl.de/~dittrich/sync/
Joe Redfish's modification (1.4.9.2 VCR + A. Dittrich's sync modification) : http://www.virtualdub.net/
VirtualDubMpg2 (AC3, VBR MP3 and MPEG2 supported) : http://virtualdubmpg2.chez.tiscali.fr/
The Cyrius modification (OGM supported) : http://cyrius.bunkus.org/
For Nando's Nandub go to Doom9's download page



Cheers,

Mijo.

[Malcolm]

@easyfab

@griff30

You can use avisynth to do normalization and some other audio-stuff. Just write a simple script like the one below and open it in VDub.

#Normalize signal to 98%
source=AviSource("[your video file here]")
return Normalize(source,0.98)

#Normalizes each channel seperately.
left_ch=GetLeftChannel(Source).Normalize()
right_ch=GetRightChannel(Source).Normalize()
Return MonoToStereo(left_ch,right_ch)

There are some useful audio filters like Amplify, LowPassAudio, MixAudio in avisynth.

Although, i'd like to have more audio filters (or a wrapper for e.g. Cool Edit Filters) to do such things like denoising the audio. See this thread for more: Denoising audio in avisynth (http://forum.doom9.org/showthread.php?s=&threadid=34173)

bye, Malcolm

[easyfab]

Thanks Malcolm,

I've use avs for a long time with videos filters but i never pay attention about the audios filters :)
From now i would insert this normalize filter in my script.

Thanks again Malcolm for this tips.

[Ookami]

@griff30

Are you still working on the new modification?

If yes, you could contact the VirtualDubMod programmers, maybe you could join them :) .

Thanks and all the best,

Mijo.