I thought I did everything right

jbwells wrote on 10/28/2004, 7:47 AM

I am relatively new to this… so bear with me. I have checked out many of the posts already and have implemented many of the suggested solutions… yet I am still having difficulty.

PROBLEM: I have produced a pretty good quality DVD but some of the scenes (especially ones with motion – i.e. someone walking from one spot to another) have what I can only describe as “motion trails” (it almost seems as if there is a F/X such as step time being applied, but I don’t have any such F/X on the clip).

I realize, after reading many posts, that providing ample info is key so here I go:

Software used:

Video Editing: Vegas Video 4.0
MPEG Encoding: TEMPENC Express 3.0
DVD Authoring: DVDLAB Pro

VEGAS:
I render final video as avi, then render audio separately as a wav file
Video: 720X480X32 29.970 NTSC, Lower Field First, NTSC DV
Audio: PCM, Sample rate – 48,000, Bit depth – 16, Channels – Stereo

TEMPENC:
Set Source: Add avi file and wav file
Total Length: 6 min 58 secs
720X480, 29.97fps, 12535 frame
48000 Hz, 2 ch

Set Output: Video – MPEG-2, NTSC, 720X480, Interlace, 29.97fps
Audio – MPEG-1 Audio Layer II, 48000 Hz, Stereo, 224kbits/sec
Output stream type: ES (video + audio)

Prioritize quality
Aspect ratio: Image 4:3
VBR (AVG bitrate)
Avg bitrate – 9200
Audio bitrate – 224
Est. file size – 469.88 MB
Max bitrate – 9200, Min bitrate – 0 , 2 Pass, Do not allow padding
DVD 4.7 GB (UDF)
DC component: 10 bit
Video mode: interlace
Motion Search precision: Highest (with error correction)

GOP structure: I picture – 1, P picture – 5, B picture – 2, Max frame – 18

DVDLAB Pro:

NTSC
720X480 – Full D1

What have I done wrong? The DVD is good, but I think it could be better – i.e. no “motion trails”. Any ideas or references to old posts I may have missed would be greatly appreciative.

jbwells

Comments

Jsnkc wrote on 10/28/2004, 8:07 AM

I would try a diffrent authoring app if possible, DVD Lab has had some problems ever since it was introduced, I can't believe they now put a "pro" label on it!

Avg bitrate – 9200 - This is WAY too high! I usually go with a CBR of 4.5 - 5.5 Mbps

Audio – MPEG-1 Audio Layer II - You shouldn't use MPEG audio for DVD's, a lot of players won't be able to play it. You should use either PCM or AC3. MPEG audio isn't in the DVD spec and therefore players aren't "Required" to be able to play it back, and a lot of them don't.

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What I would do with the tools you have is render the MPEG-2 and PCM audio file directly out of Vegas with a much lower CBR using the DVD-A template, and don't even bother with TMPENC. Stick with a bitrate of probably 5.5Mbps, if there is a lot of high motion and detail then go up to a 6.5Mbps but you shouldn't need to go higher than that. Then import the video and audio into DVD Lab (or another authoring app if you have one) and tell the program not to re-encode your video. Try to burn another one and you should get some better results

TheHappyFriar wrote on 10/28/2004, 9:45 AM

I would of thought it would be a fields problem. Try redering your right clicking on your AVI (on the timeline) and switching the fields, and render them switched too.

rcrawfor42 wrote on 10/28/2004, 9:47 AM

It's much more likely that the bitrate and audio format were the problems than DVDLab. DVDLab doesn't do ANY encoding; the only time it touches the streams is to MUX them, and it does a better job at that than most of the supposedly more polished apps I've tried.