mpeg2 to edited dvd causes jerkiness on tv

[birderrob]

I am trying to edit movies captured as mpeg2 and burn them to dvd for family viewing. When watching the completed dvd on the computer, everything looks perfect - audio is in sync, motion sequences look fine. However, when taking the dvd disc to my home dvd player (Sony DVP-NS575P), all motion sequences appear jerky.

This is the process I'm using:

1. Record the audio/video with Happauge PVR-150 using the WinTV app. Settings are: dvd output stream, 6000-9000 bit rate, 720x480 resolution, 256 audio bit rate. The recorded mpeg looks fine.
2. Convert the mpeg to avi using VirtualDub-MPEG2 1.5.10 using the free Panasonic dv codec available from this site. Again (on my computer), everything looks fine.
3. Import the avi file into Adobe Premiere Elements 1.0. I would then edit the video - mostly just trimming out unwanted sections. I then setup the dvd, with scene markers, etc.
4. On the burn dvd dialog box, I choose to burn to a folder, with the fit contents to available space checkmark checked.
5. The dvd runs and looks fine while on the hard drive. The content is burned to disc. Discs are Memorex 4x DVD+R. Again, the burned dvd looks just fine while playing on my pc, but is unwatchable on tv.

[Forum Troll]

Use VideoReDo to edit your MPEG files. I have the PVR-250 card, and VideoReDo is the greatest thing for it. VideoReDo doesn't do any re-encoding other than at the exact frames where you cut (it creates a new I frame). It just does a copy of the stream. It can also correct any audio sync problems, if you have them. I highly recommend this program.

[lordsmurf]

Are you maintaining interlace?
Does not sound like it!

[Richard_G]

Are you maintaining interlace?
Does not sound like it!

Either that or in the (entirely unnecessary) conversion to and from DV the field order is getting reversed. Why not just edit the mpegs?

[jdizzy40]

Why people take and go miles out of their way to convert MPEG's to DVD. I guess some people have all day to accomplish this. MPEG Editor to DVD Author and Burn...you're done (Menu, no menu, chapters whatever you want). Flawless each time.

[jtoolman2000]

Going from MPG to AVI and back again to MPG makes no sense at at. Capture to AVI and then edit. Follow by encoding to MPG 2 for final authoring to DVD - Burn,,, you are done.

If you capture from a good DV source to NTSC 720 to 480 DVD standard files you should be fine. refrain from capturing to MPG. Not so good for editing which I think is why you are converting back to AVI.

Besides, jerkiness during playback may more likely be due to not so good media even if it is a so called brand name.

[Richard_G]

I think I'm right in saying the PVR-150 is an mpeg only capture device, so the OP is stuck with capturing in mpeg. However, if he wants to do any clever editing, he needs a different capture device that will capture in an editable format such as DV .avi, uncompressed or lossless. To do straight cuts which is all that is likely to be required for stuff recorded off TV, then edit the mpeg. If it starts as DVD compliant, it can be left at the same resolution right the way through with no re-encoding at all.

This is about the only time I would recommend anyone edits mpeg, under normal circumstances, mpeg is a final format not a pre-edit one.

[Nelson37]

Jerkiness in motion, not seen on PC, is commonly caused by reversal of field order, or perhaps an invalid de-interlace, excessive bitrate, or bad media.

As has been suggested, you should just edit the captured MPG without any unnecessary conversions, these just decrease quality due to the multiple re-encodes, and every software you run the video thru is a chance for it to get screwed up.

[birderrob]

The PVR-150 is a mpeg only capture device. So I'm stuck there. I picked up this card for two reasons. First, I wanted to get my analog home videos off of my camcorder and onto dvd. It only has analog RCA audio/video outputs. Also, I want to edit the video first before burning to dvd. Second, I wanted to be able to record regular tv and edit out commercials before burning to dvd.

How do I check if the field order is reversed and if the de-interlace is invalid?

Would Memorex DVD+R 4X discs be considered bad?

Thanks for everyone's help.

[Nelson37]

First, you will need to check the video each time it is touched by a software package, unless you are ABSOLUTELY CERTAIN that that software is set correctly not to screw these settings up. That is why it is advisable to limit the number of progs you use.

Open the file in VdubMod and scan thru frame-by frame. Find a motion sequence. Watch for a reversal of motion, evident in the interlaced frames. Watch for interlacing in the first place, it should be interlaced.

Edit the MPG, don't re-encode. Lots of progs will do this.