SDI out for SD capture (with audio) at DVinfo.net

Kristian Indrehus · December 7th, 2006, 08:20 PM

For SD projects (ending on DVD) I usually edit on a 8bit uncompressed timeline for better graphics. On my last production I captured in-camera downconvertet DV from firewire, did editing, and then mixed on a uncompressed timeline (in FCP). The result did'nt look too good. In particular some HDV captured clips imported from a HDV timeline looked bad, so the capture HDV and then downconvert route doesnt seem to promissing either.

Starting a new project today I did a 8 bit uncompr. test-capture via XL-H1 SDI camera out, to decklink. I thought that looked way better. Crystal sharp. Only problem is XL-H1 SDI out has no embedded audio and Decklink expects that.

Any ideas on how to bring in the audio?

Dave Perry · December 7th, 2006, 08:28 PM

You'll have to use the analog RCA audio outputs.

Nick Hiltgen · December 7th, 2006, 09:51 PM

there's also the $2k box from miranda that embeds the audio adn timecode, if that's something you're interested in.

Kristian Indrehus · December 8th, 2006, 02:45 AM

Thanks. I tried to capture RCA but deck-link won't capture analog and SDI at the same time. I'll check out the Miranda box. Wish there was a workaround till I can get my hands of one though. Timecode I didn't even think of, does it mean I won't be able to recapture the SDI captured footage?

Bruce S. Yarock · December 8th, 2006, 07:36 AM

Kristian,
Have you thought about using a seperate smll digital recorder for the audio? I haven't captured anything sdi yet, but when I do, that' what I'll try. I use an Edirol R-09 for seperate audio now (when it's only one or two tracks) and other than no TC, it works great.
Bruce S. Yarock
www.yarock.com

Kristian Indrehus · December 8th, 2006, 08:16 AM

Never thought of that. I have a M-audio Microtrack, records 24bit wav files.
I tend to capture hole tapes so that could work. Don´t know if it will keep sync for a hole hour, but that can be tweaked manually.

Think I will also give the HDV by firewire a second chance, and see if I can figure out why my SD downrez doesn't come out good. After reading some more posts here it seems like many choose to go that way.

Thanks a lot :)

Will Griffith · December 8th, 2006, 09:27 AM

Quote:

Originally Posted by Kristian Indrehus

deck-link won't capture analog and SDI at the same time.

Are you using a PC? On a Mac just go into the system preferences
under decklink and change the input to analog.

Kristian Indrehus · December 8th, 2006, 09:49 AM

I'm on a Mac G5 and I tried that but I'm not able to choose analog audio when SDI is input.

Will Griffith · December 8th, 2006, 10:07 AM

Does it look like this?

Barry Gregg · December 8th, 2006, 10:19 AM

Kristian- I have recorded 1.5 hours with my older XL 1 and a Hhb miniDisc recorder and had only a couple of frames shift over the entire time. If you really have to cut a frame or two at a quite moment or add a frame of duplicated background ambience. Worked great for me.

Kristian Indrehus · December 8th, 2006, 10:20 AM

It does NOT. I must have an old driver or something. Have to check my version. This looks promissing. Great help. Maybe there's hope after all.

(Sorry, missed your post Barry. I am of course referring to Will's post on decklink. And I agree the missing timecode is not a real problem)

Kristian Indrehus · December 8th, 2006, 10:31 AM

My version of decklink pref settings is 5.3.7 It´s the extreme SD version by the way. I will upgrade and see what happens.

Kristian Indrehus · December 8th, 2006, 05:58 PM

Nope. Upgraded to latest decklink driver and it looks like SDI video and analog audio capture is for HD-decklink only. There we go again. Guess it's high time I throw out the old SD card anyway.

December 7th, 2006, 08:20 PM	#1
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	SDI out for SD capture (with audio) For SD projects (ending on DVD) I usually edit on a 8bit uncompressed timeline for better graphics. On my last production I captured in-camera downconvertet DV from firewire, did editing, and then mixed on a uncompressed timeline (in FCP). The result did'nt look too good. In particular some HDV captured clips imported from a HDV timeline looked bad, so the capture HDV and then downconvert route doesnt seem to promissing either. Starting a new project today I did a 8 bit uncompr. test-capture via XL-H1 SDI camera out, to decklink. I thought that looked way better. Crystal sharp. Only problem is XL-H1 SDI out has no embedded audio and Decklink expects that. Any ideas on how to bring in the audio?

December 7th, 2006, 08:28 PM	#2
Dave Perry Major Player Join Date: Mar 2004 Location: Roanoke, VA Posts: 796	You'll have to use the analog RCA audio outputs. __________________ Dave Perry Cinematographer LLC Director of Photography • Editor • Digital Film Production • 540.915.2752 • daveperry.net

December 7th, 2006, 09:51 PM	#3
Nick Hiltgen Trustee Join Date: May 2003 Location: Atlanta GA Posts: 1,427	there's also the $2k box from miranda that embeds the audio adn timecode, if that's something you're interested in. __________________ I have a dream that one day canon will release a 35mm ef to xl adapter and I'll have iris control and a 35mm dof of all my ef lenses, and it will be awesome...

December 8th, 2006, 10:07 AM	#9
Will Griffith Regular Crew Join Date: Apr 2003 Location: Tennessee Posts: 164	Does it look like this? Attached Thumbnails __________________ will griffith producer/editor

December 8th, 2006, 10:19 AM	#10
Barry Gregg Regular Crew Join Date: Sep 2005 Location: Poulsbo, WA Posts: 104	Kristian- I have recorded 1.5 hours with my older XL 1 and a Hhb miniDisc recorder and had only a couple of frames shift over the entire time. If you really have to cut a frame or two at a quite moment or add a frame of duplicated background ambience. Worked great for me. __________________ Walk in the light. www.barrygregg.us

December 8th, 2006, 02:45 AM	#4
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	Thanks. I tried to capture RCA but deck-link won't capture analog and SDI at the same time. I'll check out the Miranda box. Wish there was a workaround till I can get my hands of one though. Timecode I didn't even think of, does it mean I won't be able to recapture the SDI captured footage?

December 8th, 2006, 07:36 AM	#5
Bruce S. Yarock Trustee Join Date: May 2004 Location: Pembroke Pines, Fl. Posts: 1,842	Kristian, Have you thought about using a seperate smll digital recorder for the audio? I haven't captured anything sdi yet, but when I do, that' what I'll try. I use an Edirol R-09 for seperate audio now (when it's only one or two tracks) and other than no TC, it works great. Bruce S. Yarock www.yarock.com

December 8th, 2006, 08:16 AM	#6
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	Never thought of that. I have a M-audio Microtrack, records 24bit wav files. I tend to capture hole tapes so that could work. Don´t know if it will keep sync for a hole hour, but that can be tweaked manually. Think I will also give the HDV by firewire a second chance, and see if I can figure out why my SD downrez doesn't come out good. After reading some more posts here it seems like many choose to go that way. Thanks a lot :)

December 8th, 2006, 09:49 AM	#8
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	I'm on a Mac G5 and I tried that but I'm not able to choose analog audio when SDI is input.

December 8th, 2006, 10:20 AM	#11
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	It does NOT. I must have an old driver or something. Have to check my version. This looks promissing. Great help. Maybe there's hope after all. (Sorry, missed your post Barry. I am of course referring to Will's post on decklink. And I agree the missing timecode is not a real problem) Last edited by Kristian Indrehus; December 8th, 2006 at 03:53 PM.

December 8th, 2006, 10:31 AM	#12
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	My version of decklink pref settings is 5.3.7 It´s the extreme SD version by the way. I will upgrade and see what happens.

December 8th, 2006, 05:58 PM	#13
Kristian Indrehus Regular Crew Join Date: Sep 2005 Location: Norway Posts: 123	Nope. Upgraded to latest decklink driver and it looks like SDI video and analog audio capture is for HD-decklink only. There we go again. Guess it's high time I throw out the old SD card anyway.