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Canon XL H Series HDV Camcorders
Canon XL H1S (with SDI), Canon XL H1A (without SDI). Also XL H1.


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Old December 7th, 2006, 08:20 PM   #1
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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?
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Old December 7th, 2006, 08:28 PM   #2
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You'll have to use the analog RCA audio outputs.
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Old December 7th, 2006, 09:51 PM   #3
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there's also the $2k box from miranda that embeds the audio adn timecode, if that's something you're interested in.
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Old December 8th, 2006, 02:45 AM   #4
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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?
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Old December 8th, 2006, 07:36 AM   #5
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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.
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Old December 8th, 2006, 08:16 AM   #6
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Never thought of that. I have a M-audio Microtrack, records 24bit wav files.
I tend to capture hole tapes so that could work. Dont 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 :)
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Old December 8th, 2006, 09:27 AM   #7
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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.
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Old December 8th, 2006, 09:49 AM   #8
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I'm on a Mac G5 and I tried that but I'm not able to choose analog audio when SDI is input.
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Old December 8th, 2006, 10:07 AM   #9
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Does it look like this?
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SDI out for SD capture (with audio)-decklink.jpg  
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Old December 8th, 2006, 10:19 AM   #10
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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.
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Old December 8th, 2006, 10:20 AM   #11
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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.
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Old December 8th, 2006, 10:31 AM   #12
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My version of decklink pref settings is 5.3.7 Its the extreme SD version by the way. I will upgrade and see what happens.
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Old December 8th, 2006, 05:58 PM   #13
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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.
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