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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Digital Cinema Package

Great you made all this work. And yes, isn't learning the best and greatest of addictions?

It'd be nice if you could share some details about your post workflow, in particular the cineform component.

Also, which package format did you settle for in the end? SMPTE or Interop? Is the Sony SRX R320 picky and if so in which regard?

Good luck with your project.
 
Thanks Wolfgang!

The cineform workflow is great -- especially if you shoot straight to the native format and don't have to convert your footage. You can start editing stereoscopic footage immediately upon acquisition. Used in concert with FirstLight you can easily apply non-destructive looks, tweak the parallax, etc. and everything follows along in realtime in the FCP timeline. For editing and output purposes, you can quickly switch your timeline between LEFT, RIGHT, SBS, ANAGLYPH (and host of other 3d formats) using the cineform CodecStatus located in the menu bar. I was able to use the trial version of Cineform Neo3d to complete my short.

For the SRX R320 I ended up going with -interop, but was able to get it to ingest/playback -smpte as well. I discovered that the drives that come from technicolor were -interop so I went with that. The biggest issue I had with getting my drives to mount was making sure to set the -digest and -annotation tags. The system didn't seem to want to acknowledge the dcp without it. I also think I was having an issue getting paragon/NTFS drives to mount so I formatted from a PC and to be safe cleared the GPT partition that was hanging out from the osx format.
 
So you were recording to Cineform? Does that encode happen on-board the Wrangler?

Wrt SMPTE/Interop: I'd recommend going for the SMPTE package format whenever possible, including asking exhibitors to upgrade which will usually be a very simple process. All server vendors I'm aware of offer software upgrades. Not only are the SMPTE specs less brittle (Subtitles packaging), they also offer a higher level of security.

True, most major facilities still ship Interop packages and the rollout of SMPTE-capable server software seems to be more advanced in some regions than in others. Transition time.
 
Hello every guys.

Hello every guys.

I'm come from China, working for a Digital cinema. The last month, I had creat a short film and playback on Dolby DSS200 sucessfully, but i's so slowly to do this. about 240x playback times. now, I have changed some steps:

1. Save the frame Sequence with BMP format with VirtualDub, use resize| subtitles | ffvdub filters(bright adjust capture frames) same time. -about 2.5FPS
2. Convert the BMP Sequence colorspace and save in same folder, overwrite the RGB file(can save so many HD space) -about 1.2FPS
3. Image_2_j2c , I can't rember where I get this program. It's so faster than other down from openjpeg2000. 1.1~2.1 frames/sec

With some Mathematical Programming knowledge, we can do this steps looks like in a same times.

the day befor yesterday, I had finished 1.5 hours film. total of less than 90 hours.

It's nice! a good job! befor now, I had get a lot of help from here. Thanks a lot of everyone.

PS： Intel E5400 CPU , 2G DDRII RAM , 1x320G sata Hdd, 1x1.5Tb Esata Hdd.
 

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i'm still struggling with mpeg2. opendcp and dcpc works on doremi but not on qube. i'm not able to get 2.3 aspect ratio in mpeg2. mpeg2 only support 1980*1040 so how can we get this ratio. qube server was asking for x509 certificate and signerCert
 
i made some dcp from opendcp and dcpc, well its well played on dormie server but i;m not able to play on qube server. it gave me some errors about aspect ratio and signature, so i checked my cpl and there was no x509 certificate so i added it. i'm using mpeg2 1920*1080 for dcp and my aspect ratio in cpl was 16:9. should i change my aspect ratio to 2.39 or is it ok. if i need to change it then how can i chance it using ffmpeg command
 
need a little help.

I am trying to learn making DCP with open source.

So I downloaded all open source tools. and I have uncompressed tif sequence, but when I run convert to DCP. bat file or image_j2k bat file, I get that it does not recognizes file type.

What may be the result?
 
Avi Liani said:
need a little help.

I am trying to learn making DCP with open source.

So I downloaded all open source tools. and I have uncompressed tif sequence, but when I run convert to DCP. bat file or image_j2k bat file, I get that it does not recognizes file type.

What may be the result?
Click to expand...
Avi Liani said:
Hi

I am following these steps:

http://www.stereofinland.com/?page_id=49
Click to expand...

If you get "unregonized filetypes" error when trying to encode from tiff to j2c, it might be because your tiff image isn't in a correct resolution or bitdepth.
Can you provide some more information regarding your files... Are they 1998x1080, 2048x858, 2048x1080 or 1920x1080?
Or maybe provide which exact error you get. Screenshots or copy/paste of the error.
 
Can anybody help?

Can anybody help?

I have problem at ppm to tiff conversion stage
Code: 
FOR /F %%i IN ('dir /B "%DIRNAME%\processing\01-pics\left\*.ppm"') DO  %IMDIRNAME%\convert "%DIRNAME%\processing\01-pics\left\%%i" -type  truecolor  -alpha Off  -depth 12  -gamma 0.454545 -recolor "0.4124564  0.3575761 0.1804375 0.2126729 0.7151522 0.0721750 0.0193339 0.1191920  0.9503041" -gamma 2.6  "%DIRNAME%\processing\02-transformed\left\%%i.tif"
More close to black, brightness changes stepwise.

On upper half - original picture, in lower half - after conversion by ImageMagick:
attachment.php


What is it the?
 

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Bert, well, I can't reproduce (IM 6.5.7-8 here) what you're getting. The IM line you're using is fine. Also, although the linearization part is of the often used approximating type instead of the costlier correct type it wouldn't crush low values that much. Don't know, maybe your IM version is nasty. I'm sure over at ImageMagick Users someone might be able to pinpoint it.
 
Thanks, Wolfgang! The brother a wolf was right - upgrade to last version ( 6.6.9-5) has helped. People, don't use version 6.5.9-2 of ImageMagick.
And what the "correct type of the linearization part" must be?
 
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Bert, see http://en.wikipedia.org/wiki/SRGB#The_reverse_transformation for the reasoning behind the math. In short gamma encoded sRGB carries a small linear range (values <= 0.04045 [0,1]) and a powered range (values > 0.04045, powered by 2.4). The resulting slope can be approximated with a 1/2.2 slope but this will crush low end values.

ImageMagick will do the right thing when called with "-colorspace sRGB".
 
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