Stewart Mayer
Forum Replies Created
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That is one of the few simple things I had not tried, thank you. Just tried it and it makes no difference unfortunately. But, had it been the problem, I would have had to stick my head in the sand for a month.
I have canon investigating… boy, getting through their phone bank is next to impossible. Also following a few more leads, and emailed phillip bloom to see if he ever solved it. If this gets resolved i’ll be sure to post the findings/resolution.
thanks,
stewart -
I thought that too at first, since my first test that showed it was with an electronic lens. But the rest of the shooting was done with the Zeiss ZF manual lenses that have an old school iris ring and no electronics. They are actually nikon mount but I used an adapter ring.
Rented a set here: https://www.filmstarrentals.com/Zeiss-Lenses-For-Rent-in-Boston
Do you happen to have a 7d? take a photo in manual mode with a manual lens with and without liveview on, the difference will show up every time. Or maybe it is something different? But the exposure difference is the same whether at 1/4sec or 1000th exposure so I dont think it is a faulty shutter either.
hmmmmm
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Hi Jonathan, thanks for your input.
I can see the shift directly on the camera, and in premiere pro, and in quickime (after importing sequential stills), and stills batch converted from raw to jpeg in photoshop and brought into premiere and quicktime. I’ve been through it all, and the actual post gurus who are animating over our backgrounds found it too (actually they found it first as they were checking the shots after each day of shooting). I’ve been shooting timelapse with DSLRs for a couple years and this is the only camera to exhibit this behavior that i’ve used, after we determined the 7d was our problem, we switched to the XS and T1i cameras for the remaining 5 days of shooting with exactly the same setup and lenses and it was fine. Do you have a 7D to test with? Any suggestions? I’m willing to try them if someone can think of something I’ve not tested for yet.
thanks,
stewart -
On the adobe website for premiere pro 2.0, under the updates section, you can find instructions for installing the canon hdv presets. I think all of the presets use the same installation method (certain files in certain folders). If you use the same installation instructions there, but substitute the appropriate files and folders for the decklink drivers I think the presets will probably show up. I had to do this in some CS3 betas and it worked.
stew
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Thanks for the input, I’ll keep an eye on this forum for your test results.
Stewart
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Is 720p 29.97 capture yet supported over HD-SDI on PC? In the past my varricam tapes, shot at that rate, would only capture via HD-SDI at 59.94 with doubled frames.
Thanks,
Stewart -
I just captured a bunch of 1080i footage with 5 sata drives software striped in XP (raid 0), no problems. The drives are connected to the motherboard’s built in sata ports. Most of my storage is on a highpoint raid 5 card, that works too. Just make sure your audio capture folder is on another drive so your raid won’t have to seek so much for simultaneous writes.
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One more thing, if you like the “batch convert to mjpeg” workflow, don’t count on it to work with HDV footage captured with premiere pro 2.0. The HDV captured is very sloppy, and there are sometimes errors in the Mpeg stream probably intruduced by the cameras starting and stopping. Premiere Pro 2.0 ignores the problems so it is seemless, but third party file batch converters are not very forgiving and will just stop on a problem clip, or loose audio sync, making bath conversion a major pain. I just went through this. However, decoding the Cineform codec shouldn’t be a problem for the encoders.
Good luck.
stewart
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Unfortunately, I don’t really know the answers to your questions. The Decklink card cards don’t do much processing, they are mostly input/output cards, except for the realtime downconvert on some. Most of the image processing (compression / decompression) is done by your CPU. If you can currently start a decklink project and play the cineform clips on your timeline without it choking, then the new card and new version of premiere will probably behave the same way.
If it doesn’t work, you might download a batch conversion utility (there are dozens of them on the internet) and convert all your cineform encoded files into decklink’s new Mjpeg codec that does play back in real time. I love the quality of this codec, and it brings the data rate down to about 15 megs a second for HD.
I’d recommend the upgrade to Premiere Pro 2.0. It has some issues, but seems more stable than 1.5. Then again, “if it ain’t broke, don’t fix it”. It’s good advice, but I have to admit to usually not following it.
stewart
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I don’t think you can use Premiere Pro 1.5.1 for HDV editing with Decklink cards for monitoring. 1.5.1 uses a licensed cineform codec. Premiere pro 2.0 changed this and uses the native Mpeg 2 stream for capture and editing and doesn’t do any transcoding.
I’ve successfully (somewhat) capured a HDV project via firewire, and then imported that project into a new Decklink HD project. The footage will then play realtime on the timeline via the Decklink card. However, HDV seems to choke up premiere pro 2.0 fairly easily, so I wouldn’t use it on a large project if I were you. Since they now have the great looking Mjpeg codec available with the new drivers for PC, i’ve been capturing my HDV via HD-SDI to Mjpeg and find it much more reliable to edit. But I still bring in a few HDV clips in a pinch if I only need a couple.
Stewart