| 23:01 | troy_s | eadmund: When did you speak with Mr. Knoll?
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| 23:20 | standesbeamter | hoi
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| 23:35 | eadmund | Long long time ago - he had exactly the same points as you, so I guess you are in good company :)
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| 23:36 | eadmund | standesbeamter: willkommen, Geheimrat :)
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| 23:48 | eadmund | does anyone know why zedboard has gone out of stock, and microzed is available? Is a new zedboard coming?
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| 03:11 | Bertl | off to bed now ... have a good one everyone!
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| 07:56 | Topic | apertus° - open source cinema | www.apertus.org | Currently Hot: Axiom Alpha Development http://axiom.apertus.org/ | IRC Logs available at: http://irc.apertus.org
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| 07:56 | se6astian | has set the topic |
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| 09:09 | Bertl_ | morning folks!
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| 09:09 | Bertl_ | changed nick to: Bertl
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| 09:34 | se6astian | good morning
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| 09:34 | se6astian | some pictures from yesterday event: https://twitter.com/ApertusOSCinema
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| 09:38 | Bertl | nice
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| 15:29 | troy_s | Greetsies droogies
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| 16:18 | rainer_vie | Hi Everybody!
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| 16:28 | troy_s | Greetings rainer_vie
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| 17:26 | Bertl | hey rainer_vie!
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| 17:32 | se6astian | have to leave
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| 17:32 | se6astian | bye
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| 17:46 | rainer_vie | oh too late cu
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| 17:46 | Bertl | yeah, he is quick when leaving :)
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| 17:47 | rainer_vie | :) probably he has something very important to do, as always
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| 17:48 | rainer_vie | Bertl = Herbert ?
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| 17:48 | Bertl | so what brings you here? let me guess, the metalab talk?
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| 17:48 | Bertl | yes, it's me
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| 17:48 | rainer_vie | fine... nice to meet you here
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| 17:49 | rainer_vie | yes the metalab talk, and I've met sebastian before...
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| 17:50 | rainer_vie | I want to take care for the part when the camera is generating data...
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| 17:50 | rainer_vie | backup/archiving/review
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| 17:50 | rainer_vie | transcode etc.
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| 17:51 | rainer_vie | the idea of the openCine software interests me
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| 17:51 | rainer_vie | I do a lot of that in my work...
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| 17:51 | Bertl | I think I remeber sebastian mentioning somebody working on a storage server or similar, is that you?
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| 17:52 | Bertl | *remember
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| 17:52 | rainer_vie | a mobile backup/hashing/storage/viewing solution is our idea...
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| 17:53 | rainer_vie | currently brainstorming on different versions
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| 17:54 | rainer_vie | that could be a small ARM based board to big file-vault
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| 17:55 | Bertl | I had a bunch of chats with various folks regarding requirements and existing solutions ... as I see it, it should be similar to a NAS, with higher data safety requirements
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| 17:56 | Bertl | doesn't necessarily need to be network attached, but I think you get what I mean
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| 17:57 | rainer_vie | yes, similar to a NAS. For offloading there should be all protocols implemented as well (SMB, NFS, iSCSI, etc)
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| 17:57 | Bertl | basically some kind of RAID setup (probably RAID 6), lots of space and software which ensures that nothing is deleted :)
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| 17:57 | rainer_vie | right... because of that we will hash all incoming files and putting into a database
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| 17:58 | rainer_vie | so in every step of copy you should be able to verify data integrity
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| 17:59 | rainer_vie | 4k RAW uncompressed will generate a lot of data, this should be able to be playbacked also in realtime
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| 17:59 | Bertl | I was wondering if it wouldn't make a lot of sense to archive all the data on DLT for cold storage
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| 17:59 | rainer_vie | I thinking of LTO-6 and LTFS
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| 17:59 | rainer_vie | or LTO-5
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| 18:00 | Bertl | yes, LTO-5 has a sweet spot from the price/capacity PoV
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| 18:01 | rainer_vie | yeah I'm using it quite a lot... Data throughput is ok... but that should be also verified...
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| 18:01 | rainer_vie | I'm thinking of modules which will be then inside of openCine
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| 18:01 | rainer_vie | A software which can view the RAW files
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| 18:02 | rainer_vie | copy/verify it
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| 18:02 | rainer_vie | and archive it
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| 18:02 | rainer_vie | all that in a chassis with storage and LTO-Drive
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| 18:02 | rainer_vie | as well HD-SDI I7O
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| 18:03 | rainer_vie | i/O
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| 18:03 | Bertl | do you have any HD-SDI solutions you can recommend?
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| 18:03 | rainer_vie | Blackmagic is ok and has linux drivers as well as a SDK
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| 18:04 | rainer_vie | using their cards for a long time now
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| 18:04 | rainer_vie | they have a 4K quad 3G SDI card for under 1k EUR
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| 18:05 | rainer_vie | http://www.blackmagicdesign.com/products/decklink
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| 18:05 | rainer_vie | Linux Driver: http://www.blackmagicdesign.com/support/detail?sid=3945&pid=31786&leg=false&os=linux
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| 18:06 | rainer_vie | SDKs: http://www.blackmagicdesign.com/support/sdks
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| 18:08 | Bertl | okay, thanks, noted.
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| 18:08 | rainer_vie | a great project at all the camera....
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| 18:09 | rainer_vie | saw today that Xilinx has a quad HD-SDI board for their FPGA developing boards
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| 18:10 | rainer_vie | to get 12 Gbit/s picture data is really woodoo :)
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| 18:10 | Bertl | hehe
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| 18:13 | rainer_vie | The scaling from 4k to 1080p is done in the FPGA?
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| 18:13 | rainer_vie | for HDMI output?
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| 18:14 | Bertl | currently the scalining happens implicitely
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| 18:14 | rainer_vie | that means?
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| 18:14 | Bertl | i.e. we acquire the 4k image 4096x3072, reorder the data so that we have bayer blocks (RG/GB)
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| 18:15 | Bertl | then we transmit each bayer block to the HDMI encoder as RG,GB value to form a 2:4:2 RGB stream
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| 18:15 | Bertl | this reduces the image by 1/2 in each direction, i.e. to 2048x1536
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| 18:15 | Bertl | and we just cut out a 1080p region for now
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| 18:16 | Bertl | but yes, this happens in the FPGA
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| 18:17 | rainer_vie | ah ok... great... the option to get a scaled down picture from the hole sensor will be a nice feature as well... not everybody want to work with 4k data
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| 18:18 | rainer_vie | or a side by side recording function... 4k raw and a 1080p proxy for editing
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| 18:19 | Bertl | yes, I think scaling the image is not a big problem in the FPGA, of course, intregral changes will give better results than interpolation
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| 18:19 | rainer_vie | the debayer for the hdmi is done in the hdmi block?
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| 18:20 | Bertl | no debayer required in our case, as we send the data to the encoder directly, but typically it would happen after reading the buffer memory
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| 18:21 | Bertl | I don't think that it is a good idea to output both though (4k and FullHD) because of the huge bandwidth requirements
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| 18:22 | Bertl | i.e. it would be better to do the 4k->FullHD (probably encoded lossy) on the copy/archiving system
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| 18:22 | rainer_vie | yeah, probably a child module could do this later
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| 18:22 | rainer_vie | right... we will do this :)
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| 18:23 | rainer_vie | every flavor of codec and resolution will come out of this baby
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| 18:24 | rainer_vie | as said... you did a great work on the sensor frontend
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| 18:34 | Bertl | thank you very much!
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| 18:37 | rainer_vie | :) the sensor captures the pictures so it's the most important part
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| 18:37 | Bertl | welcome reproduction!
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| 18:37 | rainer_vie | \o/ reproduction
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| 18:42 | rainer_vie | afk
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| 19:31 | rainer_vie | going off... cu @all
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