Low Frequency, rumbling echo of my narriation

[RDK45]

Folks....I included this issue in another thread on Conversion from PAL to NTSC, but have decided it does not belong there. Thus:

I'm running Windows 7 Pro and Video Studio 11 Plus. I capture video to AVI with a Sony DCR-HC96E (PAL) video camera and transfer to my PC via Firewire.

I have an original AVI video file which I wanted to edit/clip for my other thread question. I clipped and saved a small section from the original video to AVI using the "first clip settings" in the SHARE dialog, ie a PAL copy of the original. I also created an AVI NTSC copy of that clip with the appropriate NTSC settings (29.97, HTSC DV audio and NTSC frame size). When I play the two AVI clips created above in Windows 7 Media Player, I hear my original narration, but also a very low frequency, 3-4 sec delayed, slowed-down, rumbling sound of my narration. When I play the same section of the original video, there is no audio abarration. The above issues was observed when played on two different Windows 7 PC, but when I play them (all three) on a Windows XP Pro PC they play perfectly.

Any ideas what is going on? A CODEC issue? A bug?

Thanks....>RDK

[Ron P.]

What audio properties are showing for your DV clips? I know with some of my old DV clips, I had the audio setting off in the camcorder, and was using 12-bit instead of 16-bit. Some programs would refuse to play the 12-bit audio. If by chance they are 12-bit, try rendering the clip, using Smart Render. You will need to go the Custom route, and on the Compression tab, change the audio to 16-bit, keeping everything else the same as the video clip's properties.

[RDK45]

Ron....Thanks. Audio setting on the original and copies are 32,000 Hz and 12 bit. I did your experiment and I still get the audio aberrations. I also created a sound file of the clip with VS11 and it plays perfectly in Windows 7 Media Player. For some reason I though I could open up the AVI file in GOLDWAVE and extract the sound tracks, but that did not work.

Finally, I did the experiment of creating an mpg file (PAL settings). It also plays perfectly in Windows 7 Media Player. I assume an NTSC mpg will also play ok, but will do it anyway.

Thus, unless someone comes up with some good ideas and a good explanation, I'm going to proceed with my DVFilm Atlantis experiments and assume this is a Media Player issue???...RDK

[Ron P.]

Check WMP player's to see if the WOW effect is on or off. It's located in View>Enhancements>SRS WOW Effects. This can cause some distortion.

[DVDDoug]

I don't know why there's a problem with your format...

Audio setting on the original and copies are 32,000 Hz and 12 bit. For some reason I though I could open up the AVI file in GOLDWAVE and extract the sound tracks, but that did not work.

32,000/12-bit is usually 4-channel. GoldWave is only 2-channel stereo. You might try Audacaty. It can handle multi-channel audio.

32kHz/12-bit takes-up half the space (per channel) of 48kHz/16-bit. So, with AVI/DV you get the same file size (and same bitrate) with 2 or 4 channels.