That's why I'm going to be investing in RED.
HDMI Capture Problem SOLVED - AviSynth RULES!
- Thread starter Ralph B
- Start date
Barry_Green
Moderator
I've been working with 3+ minute clips, but if any problems occur, they show up within the first minute. So, one minute is probably long enough.
As for bitrate, I don't know how bitrate corresponds to quality on the nanoflash. The only thing I could say is to use a long GOP mode to keep the file size down.
Sam Scoggins
Well-known member
Hello. I'm new here - but I do have a GH2. Would just like to thank those of you doing the work documented in this thread, very exciting.
I was wondering if any of you are using an HDMI recording card into a laptop? Looking at the Blackmagic Design Intensity Shuttle. 10bit 4:2:2 HDMI $199. http://www.blackmagic-design.com/products/intensity/techspecs/ .
I was wondering if any of you are using an HDMI recording card into a laptop? Looking at the Blackmagic Design Intensity Shuttle. 10bit 4:2:2 HDMI $199. http://www.blackmagic-design.com/products/intensity/techspecs/ .
Sam Scoggins
Well-known member
The mini HDMI interface on that tablet is probably HDMI out (although it's impossible to tell from the spec sheet).
What is interesting about the Black Magic devices is that they have HDMI in. The Shuttle looks very portable, but needs USB 3.0 interface. The Pro card is PCI.
Barry_Green
Moderator
Read their FAQ - the Shuttle won't work with *any* laptop on the market. Very annoying, as I've got a USB3 laptop, but -- their FAQs spell it out clearly. They only support certain motherboards, and no laptop currently available uses those motherboards. So the Intenisty Shuttle is not an option for a laptop user.
In all fairness to BlackMagic, USB 3 seems relatively new and its various implementations are probably resulting in a wide variety of bandwidth/thu-put issues. Having said that, I snapped to the Intensity Shuttle awhile ago and I went through a similar reaction of frustration/dissatifaction. They do say that they are looking at some of the newer notebooks to see if they'll pass the test. So maybe in the near future... When Matrox came out with its first RT 2000 card for 'real-time' acceleration of DV editing, (many years ago), I remember going through the same frustrations, almost no hardware seemed to meet their approval. Historical perspective?
chauncythedog
Active member
I've been looking at blackmagic for some time. Can anyone answer for sure what it will record in from the gh2, or for that matter af100, 8bit or 10 bit?
Has anyone tried one yet?
Has anyone tried one yet?
I can't say for sure, but I was under the impression the GH2 was only capable of ever spitting out an 8-bit picture/video because that's the limit of the signal processor. Can't immediately find a source/link to back that up with though.
Of course, the Blackmagic Intensity works with the GH2. That's what I've been using. It will record anything that comes through an HDMI cable, no matter what the source. It will record 8bit and the latest software gives you the option to record 10bit DPX files.
Ralph - I posted a link earlier to Khaver's batch utility. Go to the end of the thread for newest versions. There are pdf instructions included. Basically all you need to do is change the avs template script
http://www.hv20.com/showthread.php?25044-Batch-Intermediate-Creation-Utilities
http://www.hv20.com/showthread.php?25044-Batch-Intermediate-Creation-Utilities
Danielvilliers
Veteran
Since the days of the Canon hv20 which has hdmi output, a lot of people have tried to build system to capture the footage. In those days the lowest cost for hdmi capture was in the $ 3000+. Nowadays the price will go down to $ 1000 for the atomos Ninja (no reviews yet). If you still want to capture with a computer, I think the best way is to build a small form factor PC with an blackmagic intensity card and that can be battery powered. The laptop route seems to be still very complicated. With wireless wifi (asus wicast and brite-view) the problem of portability decreases a lot for the mini pc. Some of them could be built small enough to put in a back pack.
I am seriously thinking about building one if the GH2 hdmi output is ok
rogar-Happy(DBG): Making it as a director station with a wireless wifi solution. After each take you could review the footage etc. What I don't know now is the workflow. Do you capture it uncompressed (huge files) then use avisyth then compress it with something like cineform. Or capture and compress it in realtime with cineform and then use avisyth. Those question I think will be answered by Ralph B etc.
I am seriously thinking about building one if the GH2 hdmi output is ok
rogar-Happy(DBG): Making it as a director station with a wireless wifi solution. After each take you could review the footage etc. What I don't know now is the workflow. Do you capture it uncompressed (huge files) then use avisyth then compress it with something like cineform. Or capture and compress it in realtime with cineform and then use avisyth. Those question I think will be answered by Ralph B etc.It's all dependent on your setup - how fast your drive is, how fast your computer is, how much disk space you have available, what type of quality is acceptable to you, etc.
As far as codecs go, three very good options are Ut, Cineform and Blackmagic's MJPEG codec.
Most people don't know this, but you can download and install Blackmagic's codecs for free.
Go to:
http://www.blackmagic-design.com/support/software/
Click on the Intensity download for your OS. On the next page, don't enter any information, just click Download Now. Save the file. Run it. This will install the drivers for the Intensity, even if you don't have an Intensity card present on your machine. But along with the drivers, comes all the Blackmagic codecs. You're free to use these codecs in all your video applications, no restrictions.
A side note: The first time I used the Blackmagic MJPEG codec, I thought it was defective because the colors were significantly altered. It turned out, the codec was fine, but my Nvidia graphics card needed to have Dynamic Range set to Full (0-255).
Last edited:
What's the best?
