Movie sound problem in MPG

[quriousman]

I've tried to convert the Canon IXUS II AVI (MJpeg) to MPEG1/VCD file format using TmpGenc.
Adjust the resolution to PAL -> 352x288 res, 25fps, keep aspect ratio, etc. And it worked well.
But the problem is that the sound of the movie sounds distorted, it had a high pitch sound.
Is it because the frame rate conversion effect ?
How can I keep the quality of the original movie sound ?

Thanks!

[atotos]

Hi quriousman,

I have a Canon IXUS 400 and have recently tried shooting short videos. I have used a 30-days trial version of Pinnacle Studio v.8 I found on a magazine cd and it worked well in keeping the sound. You can convert to avi, mpg, Windows Media and Real Media.
Sound will be PCM and you can chose if mono or stereo, etc. Of course that will bump up considerably the size of the file, which is the down side of enclosing sound.

I used PAL too, but keeping the frame rate to 15. it could well be the problem you said. I have a couple of short videos on my site if you are interested.

[quriousman]

atotos wrote:
Hi quriousman,

I have a Canon IXUS 400 and have recently tried shooting short videos. I have used a 30-days trial version of Pinnacle Studio v.8 I found on a magazine cd and it worked well in keeping the sound. You can convert to avi, mpg, Windows Media and Real Media.
Sound will be PCM and you can chose if mono or stereo, etc. Of course that will bump up considerably the size of the file, which is the down side of enclosing sound.

I used PAL too, but keeping the frame rate to 15. it could well be the problem you said. I have a couple of short videos on my site if you are interested.

Thank for the info Atotos.
If I keep the frame rate (15fps) I have no sound problem with it. But, to make a PAL VCD (played by VCD player off course) shouldn't we have to convert to 25fps ?

[atotos]

Hi, quriousman,

I have never tried making VCDs, so I don't really know how it would work at 25fps.

Ok, I am looking it up on book I have on digital video for multimedia, even if a bit old (1999) says that for multimedia presentations (CD-ROM, CD-V and CD-I), MPEG-1 should be used.
352x288 (PAL)
25fps (PAL)
Audio: stereo 44/16
1,5 Mbits/sec.

I translate and quote "For distribution of MPEG-1 standard in computers, be it through CD-ROM of the net, reproduction through software is an acceptable solution. In some cases, to be able to show up to 2fps, audio quality is reduced to 22KHz, 16 bits, stereo, though this is usually not perceivable in a normal pc with normal louspeakers."

ok, about CD-Video a few pages later, it talks about standards and PAL
CD-Video specifications are not flexible

Data ratio (kbits/sec) 1394,4
Width 352
Height 288
Frames ratio 25
Audio ratio 44,1
Channels Stereo

I don't know how much this can be helpful, anyway here is the info I have at hand ;)

[atotos]

Was browsing tucows, found this and thought of you
Photo2VCD, it's shareware

http://www.tucows.com/preview/288683.html

others in the Movie editing software section maybe of interest

http://www.tucows.com/medit95_default.html

Hope it helps ;)