Timecode break using Blackmagic 1080i 59.94 JPEG

Blackmagic Design

Timecode break using Blackmagic 1080i 59.94 JPEG

Posted by Jamesown on July 30, 2005 at 3:01 pm

Hello,

I have a problem using “Blackmagic 1080i 59.94 JPEG” to capture video clips.

During capture clip, FCP abort and show “timecode break” message. it does this at random points, not the same point. We have tried it on FCP 4.5 HD on OS-X 10.3.7 and FCP 5.02 on OS-X 10.4.2. we all got “timecode break” message.

The video tapes are HDCAM-SR format that transferd from film using telecine. We have checkd them via SONY SRW5000, and I’m sure no timebreak for these tapes.

If we changed codec to “uncompress 8bit”, “Blackmagic 1080i 59.94 8bit”,”DVCPro HD”, or “Apple intermediate codec”, they all worked fine, no “timecode break” message appeared. So I ‘m sure the tapes are fine.

We have to capture 15 hours materials and the size must be 1920 * 1080 for offline editing and make reference materials for Visual Effect compositing. so we can’t use uncompress format or HDV size(ex. 1440* 1080).

Does any one has idea for solve this problem?

Thanks.

Below are our equipments for editing:

G5 dual 2.0G, 4.5GB RAM
Mac OS 10.4.2
FCP 5.02
Blackmagic Decklink HD Pro Card
Blackmagic driver 5.0 for OS-X (12th July released)
Sony SRW5000 VTR
Apple Xsan 1.1
5.6TB XSAN Storage

James Wong
Leader Entertainment Co., Ltd.
http://www.lapcc.com
Taipei, Taiwan

James Wong
Post-Production Division

Leader Entertainment co., Ltd.
Taipei, Taiwan
http://www.lapcc.com

Jamesown replied 20 years, 10 months ago 4 Members · 8 Replies
8 Replies

Kaspar Kallas
August 1, 2005 at 6:19 am

Can you capture fine with blackmagic deck controll?

-Kaspar
Bert
August 1, 2005 at 3:01 pm

check if your Blackmagic deckcontrol is on HDTV59,94

check your HDcam SR > Format 1080i – 59,94 an TC > dropframe!

good luck,

Bert

http://www.2frame.be
Jamesown
August 3, 2005 at 11:58 am

We have tried blackmagic deck control.
“uncompress 8 bit” is ok. “1080 29.97 JPEG” still get “Frame were dropped during capture” message.

– James
Bert
August 3, 2005 at 1:11 pm

lowering the compression of the JPEG file (50%) might help

http://www.2frame.be
Jamesown
August 3, 2005 at 3:27 pm

I used the default compression rate(25%).
I’ll tried lower compression (maybe 15%) later.

— James
Bert
August 3, 2005 at 6:54 pm

Just captured (normal) HD cam with
(but I supose that you use the format converter HDcam sr >> HDcam in the setup-menu of the sony)

blackmagic 29.97fps -jpeg 25% > no time code breaks

blackmagic 59.94fps -jpeg 25% > no time code breaks

System G5 – 2.5 dual Ghz / 3.5 GB ram / os 10.3.9 /decklink HD pro dual link in 133Mhz slot / Xraid 5.6 TB

http://www.2frame.be
David Chai
August 5, 2005 at 3:47 am

Mabye it’s the CPU can’t keep up with the transcoding in real time, so what about capture uncompressed and then use media manager to convert the footage afterwards. Maybe capture one tape first and see if this will work for you. The time code will stay with the cliip, but it will not need to be transcoding in real time.

David 😀
Jamesown
August 6, 2005 at 4:07 am

Hi,

I tried to use another dual 2.5G power mac G5 to capture 1920 * 1080 Jpeg.it worked fine.

Like David said, maybe it’s the cpu can’t keep up with the transcoding in real time. but I’m not sure it’s for all Apple’s Power Mac G5 (Dual 2G) or just for my company’s computers.

Thanks for all your help.

James
http://www.lapcc.com

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