video CD

randyvild wrote on 4/25/2003, 1:25 PM

In Veg 4 I recorded my audio at an average level. During playbacks on my computer for the mpeg1 file the levels are fine. However, when it is played on my DVD player for my TV the levels are extremely high (not distorted). If I was watching TV then put in the video I would have to turn down the volume about 60%.

Can someone help me?

Comments

Frenchy wrote on 4/25/2003, 1:36 PM

Randy:

I've experienced the same thing, with VCD's and SVCD's. Sound on pc is fine, as it is if I play back rendered tape from DV cam (after a PTT, of course).

Sound on my VCD's and SVCD's is not as *clean* as DV-avi either (not really distorted, but kind of *tinny* sounding. So far, I've learned to live with it and turn down tv volume. I'll watch here for any helpful posts.

Frenchy

p_l wrote on 4/25/2003, 6:39 PM

That tinny, sibilant sound in a VCD or SVCD made from a DV-AVI source can often be caused by the audio sampling rate conversion from DV-AVI's 48kHz to VCD/SVCD's 41kHz. Not sure how to solve it in Vegas, but if you use TMPGEnc, whose own internal sample rate converter is not so great and produces the same tinny audio problem, you can solve it by using using the SSRC frequency converter. Download and extract it to the TMPGEnc folder, then in TMPGEnc, go to Option/ Environmental Setting / External Tool and under Sample frequency convertor, browse for the location you extracted ssrc.exe to. SSSSolved my ssssibilant ssssound sssituation. :)

mikkie wrote on 4/26/2003, 6:31 AM

Whenever you convert sample rates, if it's not an even multiple, say 96/48/24, then things get complicated, especially 48 k down to 44.1 k. Thanks for the info on SSRC - SOFO's Sonic Foundry also can handle this under resample.

RE: audio levels, I've found that any audio in Vegas played back from the timeline is a little loud comparred to the same files played in any other app, and if I normalize in Vegas, seems unduly loud as well. What I've taken to doing is rendering the audio to wav, then using an audio app (Sound Forge, Goldwave, Cooledit etc.) to normalize to somewhere around -2db, then importing this back into Vegas timeline to render the video, muting the original audio tracks.

Trivia, might want to try using graphedit to pull the audio out of a set of vobs rather then DVD-AVI, or perhaps one of the Besweet/GUI pairs that let you extract 6 channel files. Staying at 48 into Vegas, let Vegas resample, during the encode if you do it there.