aj-hd 1400 downconvert

[Evan Mcintosh]

Hmmm…having the Kona remove 1080 pulldown works for me, although it isn’t a workflow I would want to use regularly. The key is to have properly calibrated deck control (for me it’s -1 in VTR Exchange and FCP) and begin capture on A frames (00 or 05 multiples). This means some manual labor to make sure all in’s land on a 00 or 05 frame and batch captures only. I have tested this in FCP and Kona VTR Exchange. I imagine it would also work for film telecined to 1080i29.97 (assuming A frames land in the right place), but I haven’t tested it.

Just to be clear, using the 1400 VTR to convert material into 1080/23.98psf doesn’t have these caveats.

Evan McIntosh
McIntosh Productions LLC
Atlanta, GA
HDX900 owner/operator

[Peter Von puttkamer]

Hi again…BTW have you ever encountered 5fps audio delay when loading from firewire- either off the camera or from 1400 deck? It’s just on HD firewire transfers, DV ok. I thought perhaps it was just my G4 (I have 2mb ram, 2 buses for firewire)limitations. Would a full system with Kona card take care of this?

Peter

[Evan Mcintosh]

This is a well known issue. The audio sync with firewire seems to relate to system speed, i.e. a new Mac Pro will be much closer to being in sync than a G4. Captures on my Mac Pro are right on. Capturing HD-SDI with Kona on a current computer will also elminate this as an issue.

Also note that older Varicams lay sound to tape a couple frames off. There is a menu selection in the H model that fixes this.

Evan McIntosh
McIntosh Productions LLC
Atlanta, GA
HDX900 owner/operator

[Peter Von puttkamer]

You are the first person to tell me this…good to know.

Peter

[Peter Von puttkamer]

Do you or anyone out there know about Sony HV1U 24p process; I have one, and will be combining it on a timeline with my HDX900 108024p footage. I understand I need to strip out the 3:2 pull down to get true 23.98 timeline/sequence- on the HDx-900, using the Kona Card.
On the HV1u front- I’m using a Apple ProRes 422 codec format to load everything in- but it takes forever. say 2.5 hours for every hour of tape- to reprocess the image in true 24p.
Any ideas about how they might combine on the sequence- and then for final output to say, HDCAM 23.98 tape?

Thanks

Peter

[Peter Von puttkamer]

Just one more question-

I have a project shot on two different HDx900; I’m able to load- thru firewire HD, the CAM A footage no problem- shot at 108024p – at 108060i- 3:2 pulldown intact for now.
Cam B- just stops in sec- with timecode break issues- never able to load. I’ve tried changing
the Drop Frame/non-drop incase that was an issue, but no luck. Any ideas why these 2 cameras would be so different- inputting into FCP- both shot at same 108024p setting…
I’m feeding the tapes shot on Cam B- thru Cam A input into computer.

thanks

peter

[Evan Mcintosh]

What happens if you turn off device control (non-controllable device) in FCP? Are you able to load?

Also, watch the timecode when playing back the problem tape on the camera’s side display and in the log and capture window. Do you notice anything abnormal?

Evan McIntosh
McIntosh Productions LLC
Atlanta, GA
HDX900 owner/operator

[Peter Von puttkamer]

Nothing unusual about TC. In fact the HDX tape dubs across fine to mini DV- and plays back- which is the way I’ve been temporarily loading the system, to get a demo done. But what’s weird about loading these tapes in (tried with non-controllable device selected to)- is when they do start running- it’s like they’re sped up and jumpy. So the audio’s out of sync, but the video is sped up and jumping too. Tapes recorded in the same camera, and played back are fine- but these tapes recorded in the other camera not. I am still working on the G4 laptop until at least next week, when the 8 core mac comes in- with a proper system. Along with a deck rental, I’m hoping we’ll be able to solve this. It’s very strange…
Best,

Peter

[Peter Von puttkamer]

Hi there, so getting to bottom of my files not loading, or when they do load, they’re dropping frames. Now this is still loading off the HDX900 onto my G4 laptop. Could this just be a function of firewire being maxed out on this system? I have used it before with the full HDX files, no problem.

This is what file analyzing said about one of the files: any ideas about this? Thanks again!

Filename: Cam A tape ten10
Duration: 00:00:56:09
Average Data Rate: 11130k/sec
Audio Grouping: Multiple

Video Track 1 (602.9 MB)
Duration: 00:00:56:09
Frame Size: 1280 x 1080
Color Depth: 24-bit Color
Codec: DVCPRO HD (1080i60) at High Quality
Frame Rate: 29.97 fps
Average Data Rate: 10942k/sec (365k/frame)
This track appears to have dropped frames.
This track contains:
1107 frames of a duration of 1.0000 frame
95 frames of a duration of 2.0000 frames
85 frames of a duration of 3.0000 frames
24 frames of a duration of 5.0000 frames
4 frames of a duration of 4.0000 frames

Audio Track 1 (Mono, 4.0 MB)
Duration: 00:00:43:16
Average Data Rate: 94k/sec
Format: 16-bit, Mono
Sampling Rate: 48.000 khz

Audio Track 2 (Mono, 4.0 MB)
Duration: 00:00:43:16
Average Data Rate: 94k/sec
Format: 16-bit, Mono
Sampling Rate: 48.000 khz

Timecode Track Source TC
Timecode: 09:18:54:12
Reel: 010A

[Gary Adcock]

[gryphon] “Could this just be a function of firewire being maxed out on this system? “

are you telling us that you have are using FW drives along with the 1400 deck????

if you did not add a second FW bus via cardbus that is the VERY FIRST PLACE TO LOOK.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Inside look at the IoHD