AVCHD output to 16:9 DVD has glitches

Question

I have a Panasonic HMC150 camera and we shot some footage in 1080 60i. After editing the native files in Premiere Pro CS4 I opened Encore and tried numerous times to burn a 16:9 DVD.  I tried using dynamic link and letting Encore do the encoding.  I tried Exporting a DVD Compatible Mpeg2 file.  I tried exporting an NTSC AVI file, but every time the DVD is burned there are 1 or 2 glitches in the final video on the DVD.
The segment isn't very long (only about three minutes), but I keep getting glitches where the video seems to stutter for a second, jumping back a few frames, repeating a few, then jumping back to the correct spot.
Anyone else had these issues?

Answer 1

Harm Millaard wrote:
 However your AVI result is pretty disappointing and my guess is that
that is caused to a large extent by the run-of-the-mill OS disk and the 3
disk raid3. Since one disk is reserved for parity, you have only 2
disks available for data storage and with the overhead of raid3, your 3
disks will only perform at around 150-170% the speed of a single disk.
You will gain a serious performance boost from adding a 4-th (identical)
disk to your raid.
Wish I could add a 4th, but there is no more room in the the case at all.  The single hard drive that the OS is stored on is a Western Digital WD3200AA 320GB 7,200 SATA.
I can't seem to be able to overclock the CPU/memory with this motherboard.  Every time I try the motherboard refuses to boot (even if I only go up 10% or so).  Of course the system has issues with not wanting to boot even without overclocking.  I'll frequently have to power it off, back on, off, back on to get it to POST if I have to shut it down completely.  I'm thinking that's a motherboard issue.  I'm starting to wish I'd gone with an ASUS for more money than this ASRock, even though Tom's Hardware reviewed it positively.
Stan Jones wrote:
a) you are sure the glitches are not in the source.
b) the glitches occur at different places?  i.e. it may be more a playback issue than somethign in the stream.  What is the datarate of the mpeg2?  Are the spikes?  I'm forgetting which tool I used to use for that; free version that will still show a spike.
There are no glitches in the original footage when I play it back on the computer using either Premiere, VLC or even Media Player.  The glitches are in the final DVDs because they show up when I play the DVD in different players.
I've tried encoding the Mpeg2 files at different data rates.  I've tried VBR 1.5, 4, 7, but mostly I just let Encore do the encoding automatically.
I need to clarify about the glitches appearing in different places.  If I export a timeline to an AVI or Mpeg2 file and play it back or burn it to a DVD, whatever glitches I see in the file after exporting is what I see when it's played back anywhere (i.e. a different computer, different media players, or burned to a DVD).
The only time the glitches change their location is if I were to re-export the timeline again.  The glitches don't change their location after being exported.
I finally gave up on the two projects I mentioned in this post and lived with the glitches I still had (there were three total in the 1080 60i project, and I'm not sure how many in the other project, but I counted at least 3).  Hopefully the clients either won't notice them or won't be that concerned.
The current project I'm working on was shot 1280x720 @ 24p.  This time I used TMPGEnc to downres all of the the footage to 720x480 Widescreen before starting the edit process.  I'm hoping this will get rid of the glitches.
Thanks.