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HDV output problems – Please Help!!!
Hello all, working on a low budget feature. Shot on Z1 HDV, 1080i, PAL, cutting it on a G5 Quad with FCP 5.0.4. Things been running smoothly.
Have a screening tonight with the director, financiers and a mentor. Took film from HDV timeline, converted to dvcpro hd 1080 with quicktime conversion. Then used compressor to turn it into a mpeg2 for DVD. I converted it to DVCPRO because when I used compressor the first time to run straight from HDV it had a shudder on it. Annoying.
PROBLEM IS: Watching back the DVD there seems to be a phantom frame appearing in between two shots, that of a slate. It’s not on the original HDV timeline, but checking it back it seems to be on the DVCPRO HD export. This is incredibly worrying, especially because it takes 10 hours to use compressor to do the encode for the DVD.
QUESTION: 1) Why is this happening and how do I solve it?
2) Will this appear more in the film (I know I might have to watch the film thoroughly, but there is only so many times you can watch an 80 minute film in a day, as well as doing editing work)
3) Will this slip my audio out of sync?any help, as always, is greatly appreciated,
Jon
p.s. I know I posted this before but no one seemed to reply. Sorry!
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1 Reply
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[Jon_Alpha] “QUESTION: 1) Why is this happening and how do I solve it?
2) Will this appear more in the film (I know I might have to watch the film thoroughly, but there is only so many times you can watch an 80 minute film in a day, as well as doing editing work)
3) Will this slip my audio out of sync?”Since no one’s tried, I’ll take a stab at it –
1. How many frames back is your slate from the In point in the HDV timeline (and do you have a dissolve going on in there)? It may be an I-frame vs. Long GOP issue when converting from HDV to DVCProHD via QT conversion – you might want to try using Compressor to convert from HDV to DVCProHD. Not sure how to solve this, or if that is even the problem. One thing you can do, since you have your show on the timeline in DVCProHD before you compress it, is just to scrub thru it and see if/where you have problems, and cut it the problem frame before exporting.
Definitely do some more research, here on the Cow (maybe the HDV forum). Jerry Hoffman has a great article on the HDV workflow in the Creative Cow magazine. Ken Stone may also have some good info for you.
2. Depending on the problem, it might.
3. It shouldn’t – but you can double check on the timeline before you compress it. And 1 frame won’t be noticeable.
Unless you were going to picture lock, I wouldn’t sweat it too much at this point. As I mentioned earlier, do some additional research. As you get close to locking your picture, you might think about recapturing via a capture card to DVCProHD or HDCam (depending on your deliverables), for CC and any effects work you’ll be doing.
Just my $0.02.
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