VTR Xchange Drop Frames

[Gary Adcock]

[Alex Varas] “I tried HD 422, 444 and 2K15fps and everytime I got drop frames in both ways (capturing with marks and capture “live”) “

Did you set up VTR exchange to write to the correct scratch disk?
did you turn on ” capturing frames”

is your disk drive fast enough? DPX frames at 23.98 requires an array that exceed 300 MBps.

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

[Alex Varas]

Hi Gary,

Where is it “capturing frames” option?? I just checked and I cant find it. I just followed the manual to get HD and 2K when setting up video input, etc… saying I want files (dpx) and not only quicktime.

I agree about 300 MB/sec, but if I can do it in FC in the same computer, why not with VTR Xchange?

I will attach a 2GB FC array disk and make the test to ensure more speed in any case…

Thanks a lot,

Alex

[Jeremy Garchow]

In the preferences, there’s “save as Numbered Files”

Then in the video compression settings, you have to change the compressor to 10 bit RGB to 10 bit LOG RGB, whatever you’re getting from your source.

And as gary mentioned, you need a fast array and make sure that VTR Exchange is recording to that array. This is also located in the preferences.

Jeremy

[Gary Adcock]

[Alex Varas] “I agree about 300 MB/sec, but if I can do it in FC in the same computer, why not with VTR Xchange? “

OK this does not answer the Question. How fast and what kind of array are you capturing to.

FCP cannot capture DPX frames, FCP does not handle content larger than 2048 wide, FCP can capture in compressed formats.

IT does not work for you because it is not configured properly to do what you want.

You have to set Video Settings, Audio Settings and Prefs inside this app correctly to get this to work
I have done this on a variety of TK machines.

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

[Bob Zelin]

Alex writes –
I agree about 300 MB/sec, but if I can do it in FC in the same computer, why not with VTR Xchange?

I will attach a 2GB FC array disk and make the test to ensure more speed in any case…

My calm reply –
NO NO NO NO NO NO NO NO NO ! !!!!!! ALEX NO !

You are DREAMING if you think you are going to capture 2K with the internal drives on your MAC Pro – even with 3 internal SATA drives stripped together. And when you say “I will attach a 2GB BC array disk” – THIS MEANS NOTHING. If you attach a loaded Apple XServe RAID with 14 drives (which is a 2 Gig FC array) – THIS IS NOT FAST ENOUGH FOR 2K FILES. WHY DO YOU ASSUME THIS.

To do 2K files, you need a MODERN FAST DISK DRIVE ARRAY that will do 500mb/sec or over. 300mb/sec is BARE MINIMUM and you will not get reliable SUSTAINED PERFORMANCE from this data rate. A loaded 2GB FC array like an Apple XServe RAID with 14 drives stripped RAID 50 is NOT FAST ENOUGH.

SO WHAT DO YOU NEED ? You need a MODERN DISK DRIVE ARRAY – where can you find one ? Right here on Creative Cow – right here on this forum – look to your left, and look to your right. See the ads from Dulce Systems, Cal Digit, Maxx Digital, G-Tech, Sonnet Technology – they ALL MAKE wonderful hi speed drive arrays that all run above 500mb/sec, and will ALL work for 2K files with SUSTAINED performance. IF you are an “Apple Only” guy, then you need the Promise VTrak which is a 4GB FC array that will cost double of any of the products that you see advertised on Creative Cow.

If you do not take my advice YOU WILL FAIL.

Bob Zelin

[Alex Varas]

Hi all,

Thanks a lot for your answers.

The main goal for me is to get HD, both ways 422 or 444 with Kona3, 2K files is a bonus.

I tried to connect infortrend A24F-G2430 (FC to SATA) to MacPro, but the LSI 7202EP doesnt like it at all… Or anyone has one connected?? I just checked compatibilities and they dont match…

So now the option for HBA is ATTO FC-42ES, 4Gb FC.

So with A24F-G2430 and ATTO FC-42ES, do you think I would get those 300 MB/sec or even more??
Which kind of raid? raid5? how many disk in that array?? I can get up to 24 disk.

Thanks in advance and have a great weekend 🙂

Alex

[Walter Biscardi]

[Alex Varas] “So now the option for HBA is ATTO FC-42ES, 4Gb FC.

So with A24F-G2430 and ATTO FC-42ES, do you think I would get those 300 MB/sec or even more??
Which kind of raid? raid5? how many disk in that array?? I can get up to 24 disk. “

You still have not answered the question of “which RAID are you running?” The HBA doesn’t matter at all without the correct RAID. We run an 8 bay MaxxDigital EVO HD unit that tops out at 500MB/s in RAID 5.

Which array are you running?

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

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[Bob Zelin]

Hi Alex –
you have this Infortrend drive array, correct ?
https://www.infortrend.com/main/2_product/es_a24f-r(g)2430.asp
This is the Infortrend EonStore.

You will have nothing but grief with the LSI Logic host controller cards on a MAC. I urge you to follow your own advice and only use an ATTO 42ES.

However, as Walter has just mentioned, there are MUCH CHEAPER products on the market, that are simply SAS/SATA, that will do the same job for a lot less money. You can see these products right on these forums, in the banner ads to the left and right of your page right now.

bob Zelin

[Alex Varas]

Hi again,

To Walter:

The first tests I was making were on the system disk (200MB/sec) and SAN drive (not full speed channel) also another 218 MB/sec, both reading writing as average.

So thats why I want to implement the infortrend box, with null result due LSI HBA…

To Bob:

Much cheaper?? I guess you mean disk arrays, yes they are more cheap than infortrend ones, but happens I already have one. The thing I want is to use the two channels and split the disks, some for the system actually working (just keeping info) and some for the thing I wanna.
If the system with VTR Xchange + MacPro + Infortrend + WhatEverHBA (I hope ATTO 42ES) are gonna give me the enough speed to get what I want I will buy the ATTO, the only thing left…

My decision to get ATTO is both are verified by SAN provider and Infortrend, also ATTO has been working with Mac during ages.

So… do you think with this mentioned config will I get the bandwidth to get even 2K??

Thanks again 🙂

Alex

[Walter Biscardi]

[Alex Varas] “To Walter:

The first tests I was making were on the system disk (200MB/sec) and SAN drive (not full speed channel) also another 218 MB/sec, both reading writing as average.

So thats why I want to implement the infortrend box, with null result due LSI HBA… “

Neither is fast enough for reliable uncompressed HD capture and definitely not for 2k.

No clue on the Infotrend box, what does the manufacturer say about the speeds possible with the various HBA’s? That’s really the only way to know for sure what your box is capable of before you purchase anything.

Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.

STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
Read my Blog!