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Avc Intra and viper hd Stream
Hi, I’ll be shooting a documentary using a Viper camera and a panasonic HGP20 recorder. The Viper provides 422 hd video stream at a 25psf framerate (that’s what we’ll be using) but noticed that the recorder uses an AVCINTRA compression and a 50i framerate. Guess that, as long as the camera will be feeding a sort of interlaced footage of progressive scanning, I won’t have motion artifacts while editing… but not sure about that. I ran some tests and didn’t notice anything strange, but would like to know if someone has experience in that kind of situations and if you have some advice to give.
Would also like to know what would be the correct settings for the timeline (apple pro res 422 HQ is my bet…)
Does anyone knows if final cut is compressing the signal while tranfering AVCINTRA into a .mov apple pro res container? -
4 Replies
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[illia torralba] “a 50i framerate. Guess that, as long as the camera will be feeding a sort of interlaced footage of progressive scanning, I won’t have motion artifacts while editing… but not sure about that. I ran some tests and didn’t notice anything strange, but would like to know if someone has experience in that kind of situations and if you have some advice to give.”
Hi Illa,
No problem about this.
is what is call PSF (Progressive Segmented Frame). The progressive picture is streamed and recorded as Interlaced, then will be treated as any other Progressive stuff: Must shows up as “field order NONE” on FCs Browser, and edited on a NONE sequence.[illia torralba] “Would also like to know what would be the correct settings for the timeline (apple pro res 422 HQ is my bet…)
Does anyone knows if final cut is compressing the signal while tranfering AVCINTRA into a .mov apple pro res container?”
Well, both are similar codecs (10b 422/YUV, I-frame), but when transcoding there is an unavoidable generation lost. Nothing to concern about.
I would go to Prores HQ without hesitation.
rafael -
You can bring in AVC_intra natively with FCP7. Then you edit on a ProResHQ timeline.
I do this all the time as I also edit the MXF files natively with MXF4mac and send pertinent metadata over with P2Flow.
Jeremy
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Thanks a lot for the advice! Do you know any other mxf viewer? I used a focus fs100 to record some panasonic footage and couldn’t format properly the video due to a malfunction of the machine… now I have a bunch of mxf archives that I can’t recover…
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[illia torralba] “now I have a bunch of mxf archives that I can’t recover…”
Calibrated Software is another one, but I don’t have much experience with it.
I would use MXF4mac MXF Import and then use Atomic Fusion (free from MXF4mac) to fire the broken files over to FCP. MXF4mac has been great for us. It is more expensive, but the cost is relative to the amount of time it saves. In the grand scheme, it’s not too expensive.
Jeremy
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