VCDEasy: VCD OK, SVCD has audio out of sync. Please help...

[daamon]

Hi all,

I've spent quite some time surfing around a fair few of this sites forums and guides etc. to the point where I actually managed to produce my first ever VCD ( ) - and it worked first time. In doing so I got to (basic) grips with TMPGEnc and VCDEasy. Thanks to everyone who makes the effort to post replies and to help others - it really is very much appreciated.

Then I thought I'd up the quality and create an SVCD. So I re-encoded the source .avi file to mpeg2 and cut the disc. Video quality is obviously better, but the audio lags the video by about 1 second (continuously) right fromt the start. Here are the details for the source .avi:

Captured using Premiere 6:
File Path: [PATH]
File Size: x bytes
Total Duration: HH:MM:SS:mm
Average Data Rate: 3.61MB per second
Image Size: 720 x 576
Pixel Depth: 24 bits
Pixel Aspect Ratio: 1.067
Frame Rate: 25.00 fps

Audio: 48000 Hz - 16 bit - Stereo

AVI File details:
Contains 1 video track(s) and 1 audio track(s).

Video track 1:
Total duration is HH:MM:SS:mm
Size is x bytes (average frame = 148.12KB bytes)
There are x keyframes.
Frame rate is 25.00 fps
Frame size is 720 x 576
Depth is 24 bits.
Compressor: 'dvsd', MainConcept DV Codec 2.1.0

Audio track 1:
Size is x bytes
Rate is 48000 samples/sec, stereo
Sample size is 16 bits

Here's the process I go through:
Capture the audio-video from a DV cam with Premier into an .avi as detailed above.
Use TMPGEnc to encode to mpeg2 for SVCD.
Take the .mpg file and cut to CD, as an SVCD, with VCDEasy.

Works a treat for VCD, audio lags video on SVCD.

Your help would be welcome... Cheers.

[daamon]

I've been doing more hunting for clues and possibles causes to my audio sync problem and spotted this during the TMPGEnc encoding process. It appears that TMPGEnc takes the 48000Hz audio and encodes it as 44100Hz (see the screen print) - an option that's greyed out and can't be changed.



I'm out of media, so can't try it out just yet. Can anyone shed any light on whether this is the cause? If so, how can I change it coz it's not a selectable option?

Cheers.

[daamon]

I thought I'd post this as a conclusion to this thread - in case it's of use to anyone else.

After much searching of forums and help guides I still had no success and, in desperation, wondered if it could be the player. I have a Toshiba SD220e that is supposed to play SVCD's OK.

It transpires that, with certain SVCD creating tools, that the SVCD's played by the player have the audio out of synch with the video.

Here's the link for full details:

https://www.videohelp.com/forum/viewtopic.php?t=154033&highlight=

And I can confirm that I've tried Bill's fix and that it works (all be it on onle one SVCD - but that's good enough for me!!!).

So, big thanks to Bill for taking the time to research it, and especially for sharing it. I hope this helps others too.

MORAL: Don't always think it's the software, or something you're doing wrong - eliminate all possibilities including your hardware...

[scottb721]

Just some personal experience,
My Philips DVD718 has sync problems if I encode the SVCD video at 2520 CBR. The sync problem comes and goes through out the disc. It progressively gets worse until screen goes black for a sec then comes back but now in sync again.

If I drop video bitrate back to 2450 it plays fine.

[daamon]

Thanks Scott. Useful to know...