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DPX Playback
I am having a devil of a time playing back sequences of DPX in FCP. I have a fast enough Array (Caldigit HDOne) and 8 Core Mac Pro, but it always drops frames after the same period of time on playback, which is leading me to believe there is something wrong with my setup. I get consistent consistent 350-400mb/sec read/write times to this drive. Any thoughts? The frames are only 5.6mb/sec 2K DPX files.
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8 Replies
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[Michael Nichols] “The frames are only 5.6mb/sec 2K DPX files.
“2048 x 1156 DPX files are about 9Mgs PER FRAME- not per sec.
5.6 MB/Sec is DV stream footage.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows -
That was a typo. My FRAMES are 5.6mb. I have 2K scans of 2 perf, so the pixel dimensions are 1868 x 780, not 2048 x 1156.
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Which version of the OS?
Kevin Monahan
http://www.fcpworld.com
Author – Motion Graphics and Effects in Final Cut Pro -
Look into the purchase of the excellent solution for handling DPX files called “Glue Tools”.
Rather essential for DPX workflow.
Plus, search is your friend: https://forums.creativecow.net/thread/8/995851
Lots of solutions in that post.
Kevin Monahan
http://www.fcpworld.com
Author – Motion Graphics and Effects in Final Cut Pro -
Thanks Kevin.
I actually have Gluetools and am getting playback. But the playback is choking when I know I have the speeds for 2 streams!
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I’ve heard that 10.5.2 was problematic. What is your OS? Also, make sure windows are set to less than 100%, i.e. 50 or 25% and NOT in Fit to Window. Make sure no windows are overlapping. Check that link in my last post too.
Kevin Monahan
http://www.fcpworld.com
Author – Motion Graphics and Effects in Final Cut Pro -
OS and FCP are up to date, but you bring an interesting point. I have my window set to “Fit to Window.” I will bring it down to 25% and leave it at that.
Thanks!
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I figured out (kind of) the problem. Apparently, I went about things all wrong in my DPX “conform.” When I generated my offline edit from the DVCAM dailies, I sent the EDL to the post house and had my scans done. When I got the scans back, I imported the EDL into FCP and reconnected the offline files to the corresponding DPX stacks. The timecode matched and the files reconnected! However, there are over 1100 edits. FCP is freaking out and is choking a lot. It also takes me a good 10 minutes to start the app up. The “Preparing Video for Display” progress bar takes about 7 minutes to get the project ready. Instead, I imported all 3.5 hours of scans into a new project, dropped them into a sequence and let it play and I got through 2+ hours without a dropped frame. Clearly, my “reconnect time saver” did nothing but delay me 2 weeks.
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