utility for shortening (pitching-up) huge wave files

[jwexqm]

I want a solution for shortening by resizing (pitching up) ~1GByte 48KHz 16-bit stereo wave files by a several seconds. At present I've tried a command-line based utility called Wave Length Adjust which works by crudely throwing away samples evenly through the file and Cool Edit Pro which uses a more accurate resize algorithm. Unfortunately Cool Edit takes about 2 hours on my machine which seems excessive to me. Wave Length Adjust is alright for shortening the file by a few hundred milliseconds as you don't really notice the sample decimation but it gives brash artifacts if you try to shave many seconds off.

So I'm looking for a utility which will give me good results more quickly than Cool Edit pro.

I want to do this as I convert inverse telecined progressive 23.975 NTSC rips to 25FPS progressive DivXs for nice stutter-free playback through my TV-out on a PAL system. Increasing the playback rate of the movie requires the sound to be shortened accordingly, hence the need for this utility.

Any suggestions welcomed
James.

[24hourloop]

Cooledit. Sound Forge. Although Cooledit is probably the better way to go. As a matter of fact you can do so without changing the pitch (just speeding up tempo).

[chi]

@jwexqm

where's the problem with 23.975 fps? i have no problems watching such divx movies on my pal-system...

[jwexqm]

I've tried a couple of TV-out setups (my old GeForce2 GTS & now my Radeon 8500) and I definitely notice visual stuttering on pans and slow camera tracks with 23.975 progressive rips when played using PAL tv-out.

My experience with a Hollywood+ MPEG2 decoder card on an old telly gave me the idea to try the frame rate adjustment fix. I found that playing region 1 DVDs using PAL-50 gives judder but PAL-60 or NTSC restores smooth motion. I know that's before the disc's had inverse telecine applied to it but the principle of the frame rates on the source & viewing medium being mismatched is the same.

On a side note it really pisses me off that when they laid out the DVD spec they didn't choose to encode all regions at 24FPS progressive and then use the player to adapt it to whatever TV standard it is being played on. Maybe it was too much to expect the hardware to achieve at the time.

James

[DSPguru]

like i said in another thread.
use BeSweet with -frc( -r 960 1001 ) . if you use wla, u should know what this command stands for.
soon i'll release BeSweet v0.95 & DanniDin will release BeSweet GUI v0.6 and it will allow very easy NTSC2PAL conversion.

[Movieslut]

Now, THAT will be a nifty feature!
Tnx!!

[DSPguru]

Originally posted by Movieslut
Now, THAT will be a nifty feature!
Tnx!!
why will ? it is a nifty feature ;) !

[Movieslut]

Not until the new gui will be out it wont! No way in hell i'm gonna do cli LOL

[DSPguru]

hahahaha, Movieslut, but you could download the GUI v0.6beta9. it supports it :)

[Movieslut]

Suppose I'll do that then :)