'pops' in audio after down converstion from hi-def to DVD

[PeterHF]

I videotaped a piano solo the other day with my Sony HC1 in hi-def. The original hi-def file has nice clean audio. When I down convert to DVD best quality using VS there are 'pops' in the audio. They are not very loud but once you notice them, it's all you hear.

Any thoughts?

[Black Lab]

I suffered similar results when I rendered to Dolby @ 256 kpbs. Lowering that to 224 kpbs has seemed to fix it.

[PeterHF]

Interesting. I'll give that a try later today and report back. Thanks.

[PeterHF]

Today is my last day of the VS 10 plus trial. I hope I can fix this problem.

My source file is an MPEG DVD file that is about 45 minutes long. I clip out a small section of it, say, 30 seconds long and 'share' it keeping the same settings as the project file and I get 'pops' in the audio. They are very noticeable.

I tried changing the audio bitrate with no luck.

Does anybody have any suggestions? I'd like to buy this software but not if it introduces pops in the audio.

[jchunter]

Peter,
Downconverted HDV audio does not "pop" as a rule. I use the following properties:
NTSC drop frame (29.97 fps)
MPEG files
24 bits, 720 x 480, 29.97 fps
Frame-based
(DVD-NTSC), 16:9
Video data rate: Variable (Max. 9800 kbps)
Audio data rate: 224 kbps
MPEG audio layer 2, 48 KHz, Stereo

See HD Tutorial at http://phpbb.ulead.com.tw/EN/viewtopic.php?t=13872

BTW, this could also be an artifact of the playback software. What are you using to play?

[Black Lab]

I guess the changing of the bit rate was just a fluke, as I still sometimes get pops when using Dolby. The only way I was able to remedy the situation was by changing to LPCM. The project was only 12 minutes so the size of the file was not an issue.

[htchien]

Hi Peter,

Maybe you can take the content to someone who owns VS 10 with Service Pack 1 to see if it will happen in VS 10 SP1. Ulead has released SP1 for VS 10 to fix some problems.

http://www.ulead.com/tech/vs/vs_ftp.htm

Hope this helps.

H.T.