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help im dying..just wasted soo much time..capturing issues 10 bit hd
I am working in 10 bit uncompressed HD yuv 422 sony HDCAM. I was just working last week fine. I had to swap out some drives in my xserve raid. Now when I capture, sometimes a clip will capture with frozen video. Some times the video freezes for just a second, sometimes it freezes for 10 seconds. it is very random. I batch captured about 12 tapes before I actually started watching the capture window as it was going through the tape and capturing clips. The video continues to play on my monitor, which is hooked up to my capture cards output. So even though the source video is fine, and the playback through the card is fine, the video capture window skips and freezes randomly and it gets captured that way. The audio is fine even during the freeze/skip ( whatever the hell you want to call it ) I have set up my system to abort capture if it detects a timecode break and it does not abort during these freezes. Another weird thing is that timecode continues to run smooth.
If I had to guess I am assumeing that I did something wrong rebuilding my raid. If there is a pro out there who has dealt with formatting a complete raid, creating 2 arrays, aand then making those 2 arrays a raid, please save me and give me a hand….at this point I am going to go through all of clips and delete 1/3 of what i captured and then troubleshoot my issue.
I do have my settings at 8 bit uncompressed playback, but as i said before I just finished editing all last week with these settings, and no problems until i made my raid anew.
Blackmagic disk speeds put me at 54 MB/s for HDTV 1080 10 bit yuv 422 disk read….and 35 MB for Disk write.
At the top it reads that my disk read data rate is at 284 and my disk write is at 188
Please save me guys
Ryan
G5
xserve 2.5 TB
FCP HD
2 gigs ram
Used to be Kona Hd…Now its Decklink HD proRyan Servant
AirSeaLand Productions
http://www.airsealand.com
718-626-2646 -
7 Replies
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Go to this page on Apples support site:
https://docs.info.apple.com/article.html?artnum=302780
I had this same problem happen to me several weeks ago. My IT guy came in and suppoidly “tuned” my XServe RAID. I’m not sure he’s the one to blame however. If you select all the proper settings in the Apple article and then choose the “Restart” drive feature the settings go back to the default position, which you DON’T want. The default check boxes will cause the problem you are seeing.
Moral of the story is don’t restart your RAID without double checking the settings afterwords.Michael Alberts
Ambidextrous Productions, Inc. -
[ryanservant] “Blackmagic disk speeds put me at 54 MB/s for HDTV 1080 10 bit yuv 422 disk read….and 35 MB for Disk write.”
This is no where near fast enough to caputre 10 but uncompressed HD, you need well over 200MB/sec across your entire RAID to do . Something in your Raid is amiss.
If you are working in 10 bit, FCP should be set for 10bit output as well. Open a clip in quicktime and not FCP. Does it stutter there?
Jeremy
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I believe HDCam is only 8-Bit, so any 10-bit work could be a waste of space and unnecessarily tax your drives. The previous post is also correct. Your FCP playback settings should match your capured media for proper viewing.
Lon Keller
Chief Editor / Producer
Sundog Studios -
Oh, forgot this.
Try running Disk Warrior and rebuild the directory on your RAID. It has saved me on more than one occasion.
Lon Keller
Chief Editor / Producer
Sundog Studios -
That check box was checked so i unchecked it. I ran the disk speed test again and I got the same results. I have yet to try recapturing yet. I was wondering if anyone had an xserve full of drives like I do that could run a blackmagic speed test and give me the numbers they got so I could compare them. That might give me something to go on. Also I have not tried disk warrior yet. What volume format should I have picked for the raid settings? When I put the two aarrays together I chose Mac OS extended. SHould I have chossen the one that was labeled with a (journaled) in the title?
G5
xserve 2.5 TB
FCP HD
2 gigs ram
Used to be Kona Hd…Now its Decklink HD proRyan Servant
AirSeaLand Productions
http://www.airsealand.com
718-626-2646 -
Do not use “journaled”
Is what a tech from a RAID box manufacturer has told me.
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Thanks….so after I deleted all the crappy clips I transfered the good clips to my other raid, deleted the raid, created a new raid, unchecked that stupid box, and started capturing again. I now have no problems yet. I captured about 300 gb of video and no problem files yet.
thanks guys for all of the help.
Ryan
G5
xserve 2.5 TB
FCP HD
2 gigs ram
Used to be Kona Hd…Now its Decklink HD proRyan Servant
AirSeaLand Productions
http://www.airsealand.com
718-626-2646
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