Choppy video on DVD export
by Rhett Aultman
on
Apr 27, 2009 at 6:08:21 pm
Hello everyone. I've been struggling to find an answer to this on my own but to no avail, so I really hope someone can help me out.
I have been using Adobe CS4 (and thus Premiere) for the last few months to produce roller derby video. Everything looks fine in the preview panes. When I make a DVD, however, the resulting footage tends to have a "choppy" look, almost like there are frames missing. I've made DVDs by using Encore and a Dynamic Link back to the Premiere sequence, and I've also tried exporting an AVI of the sequence and then using another DVD authoring program like Windows DVD Maker. The results are the same.
To drill into greater detail, here's the full workflow:
* Two source cameras-- a Panasonic PV GS-120 (a 3CCD consumer-grade camera) and a Sony PD-150 (a higher-end standard definition camcorder, suitable for TV news or a documentary), both recording DV casettes.
* DV is dumped into Premiere via Firewire.
* In Premiere, the dumped AVI files are synchronized up, then mixed using the multi-camera tools. As an experiment, I have tried leaving them in their original interlacing as well as setting them to "always deinterlace" before I begin synchronizing and editing.
* The multi-cam edited sequences are then lined up in a final mix sequence.
* The final mix sequence is sent to Encore or rendered to an AVI for DVD authoring.
At the end, the resulting DVD has choppy footage. I believe this happens throughout, but it looks choppiest when it's the footage from the Sony camcorder. I don't know if it's just that this camcorder has a much better quality of image so it's more obvious, but either way things come out looking choppy like frames have been dropped.
Re: Choppy video on DVD export by Jon Barrie on Apr 28, 2009 at 1:18:08 am
It sounds like inconsistent formats, NTSC and PAL, = frame rates = jerky (not smooth) playback. Make sure the cameras recorded the same format and that they were captured into the computer the same as they were recorded and the project settings are the same too. Then the export settings are the same format, then the DVD authoring is the same format.
- Jon ;)
Re: Choppy video on DVD export by Rhett Aultman on Apr 28, 2009 at 4:21:29 am
I'm almost completely sure they're both NTSC. Also, for the sake of correction, it's a Sony PD-170 not a PD-150. Also, this is strictly a problem in Premiere Pro. My old workflow involved Premiere Elements, and I would transfer the tapes, deinterlace them, edit, produce an interlaced AVI from them, and then burn to DVD with Nero, no problem.
I've been playing around with the field ordering and the final AVI render. Exporting it as a 24p seems to lighten the jerkiness from one camera but make the other a touch more jerky. I'm now trying the "reduce flicker" option instead.
Re: Choppy video on DVD export by Jon Barrie on Apr 28, 2009 at 4:35:06 am
Are you certain the NTSC format is 24p? I think the PD170 can't shoot in 24p. I know your other camera can't. NTSC is 29.97 and prosumer cameras that can cineframe 24p are wrapping it inside of 29.97 interlaced anyway. I interested to know why you are deinterlacing - effectively throwing out half of the frame information only to go back to an interlace output when you say you are deinterlacing?
It sounds like you have confused the idea of 24p and film look with what you can get from video shot in an interlaced format running at a higher frame rate than it's original.
What are the clip properties from the original clips? Are they the same?
- Jon ;)
PS: You shouldn't need to deinterlace. Interlacing only shows up at the end on the web. TVs and DVDs don't show the interlacing it's interpreted and corrected for TV/PC playing DVDs and you won't see it.
Re: Choppy video on DVD export by Rhett Aultman on Apr 28, 2009 at 6:36:37 am
Oh, the deinterlacing was probably unnecessary, but I used to do a lot of web-only stuff so I just did it as a matter of course.
I'm aware that 24p isn't NTSC. I have been experimenting. I'd like to believe that a pair of NTSC captures, edited, and dumped out as an NTSC AVI, still interlaced, would produce a DVD without any choppy appearance. However, that has not been the case and so I've experimented with various things. The 24p export seems to at least spread some choppiness around, and I was just mentioning it as a data point.
Re: Choppy video on DVD export by Michael McQuilkin on Sep 24, 2009 at 1:35:43 am
Hi there. I seem to be having the same problem. 24p NTSC footage (not advanced) shot on a Panasonic DVX-100b, imported into a 24p project in Premiere. the choppiness seems most evident in pans, camera movement, and brighter shots. Audio is always in sync. Unfortunately, all I can offer is what I've tried so far:
-Exported to every Encore DVD preset (24p, 23.9fps, medium and high quality, 30fps, etc.)
-Exported to MPEG-2, then imported into Encore
-Exported to AVI, then imported to Encore
-Making a wish
Any help would be most appreciated. I will now return to banging my head against a wall.
