Current Server Time: 10:28 (Central Europe)

#apertus IRC Channel Logs

2016/10/09

Timezone: UTC


01:42
jucar
joined the channel
03:28
slikdigit_
left the channel
04:20
jucar
left the channel
05:17
BogdanXor
joined the channel
05:33
BogdanXor
left the channel
06:49
Spirit532
left the channel
08:23
Alex_Chooks_
joined the channel
08:30
BogdanXor
joined the channel
08:35
BogdanXor
left the channel
09:06
BogdanXor
joined the channel
09:10
BogdanXor
left the channel
09:22
BogdanXor
joined the channel
09:26
BogdanXor
left the channel
09:30
Alex_Chooks_
left the channel
09:31
niemand1
joined the channel
09:37
Alex_Chooks_
joined the channel
09:40
niemand1
left the channel
09:49
BogdanXor
joined the channel
09:54
BogdanXor
left the channel
10:43
BogdanXor
joined the channel
10:47
BogdanXor
left the channel
10:52
Napejts
joined the channel
11:08
g3gg0
joined the channel
11:35
Napejts
left the channel
11:36
Napejts
joined the channel
11:37
BogdanXor
joined the channel
11:41
BogdanXor
left the channel
11:46
BogdanXor
joined the channel
11:54
niemand
joined the channel
11:56
BogdanXor
left the channel
12:01
BogdanXor
joined the channel
12:05
BogdanXor
left the channel
12:13
BogdanXor
joined the channel
12:18
BogdanXor
left the channel
12:33
BogdanXor
joined the channel
12:39
BogdanXor
left the channel
12:45
BogdanXor
joined the channel
12:49
BogdanXor
left the channel
12:56
BogdanXor
joined the channel
12:56
niemand
left the channel
13:00
BogdanXor
left the channel
13:06
BogdanXor
joined the channel
13:11
BogdanXor
left the channel
13:16
BogdanXor
joined the channel
13:28
Bertl_zZ
changed nick to: Bertl
13:28
Bertl
morning folks!
13:38
BogdanXor
left the channel
13:44
Alex_Chooks_
left the channel
13:58
Alex_Chooks_
joined the channel
14:29
BogdanXor
joined the channel
14:33
BogdanXor
left the channel
14:36
Alex_Chooks_
left the channel
14:40
niemand
joined the channel
14:51
niemand
Bertl, is 720p30 also possible as output? (not now, but for the event)
14:55
arpu
left the channel
14:56
jucar
joined the channel
14:57
Alex_Chooks_
joined the channel
15:04
Bertl
it would be doable, yes
15:05
Bertl
the HDMI output sequencer is configurable, so you can program it to output 720p as well
15:07
Bertl
or do you mean 1080p and 720p in parallel?
15:08
Chooks_Alex
joined the channel
15:08
niemand
Bertl, only 720p
15:08
Bertl
okay, yes, that should be rather simple, just needs some testing
15:09
arpu
joined the channel
15:10
Alex_Chooks_
left the channel
15:23
BogdanXor
joined the channel
15:25
Spirit532
joined the channel
15:28
BogdanXor
left the channel
15:31
Alex_Chooks_
joined the channel
15:34
Chooks_Alex
left the channel
15:41
se6astian|away
changed nick to: se6astian
15:43
niemand
left the channel
15:50
philgrandeC
joined the channel
15:56
niemand
joined the channel
15:59
jucar
left the channel
16:17
BogdanXor
joined the channel
16:22
BogdanXor
left the channel
17:04
niemand
axiom beta -> decklink capture cards is not really working ...
17:04
Spirit532
left the channel
17:05
Spirit532
joined the channel
17:05
niemand
With a usb caputure card it works (1080p30 only), with a monitor it worked with 1080p60.
17:06
niemand
and currently I see a green image but with the correct axiom beta overlay. what could cause this, Bertl?
17:11
BogdanXor
joined the channel
17:13
niemand
okay with the decklink mini recorder we only get red and green tones, with a correct overlay. With a blackmagic pocket camera it works fine, also with intensity shuttle as capture card via usb.
17:14
kaiserlich
joined the channel
17:15
kaiserlich
long time, no see ^^
17:16
BogdanXor
left the channel
18:30
jucar
joined the channel
18:32
Bertl
niemand: the axiom overlay is white, but the image is green?
18:32
Bertl
kaiserlich: welcome back!
18:32
kaiserlich
(:
18:32
kaiserlich
hi hi
18:33
Bertl
niemand: the overlay is combined before the TMDS (HDMI) encoding happens, so if that works, then you just managed to configure the matrix or output LUTs in an unfortunate way
18:34
Bertl
matrix and LUTs do not affect the overlay, only the image from the sensor
18:38
niemand
turns out, the image is there, but only in green and red
18:38
Bertl
maybe you just think that the overlay is correct
18:39
Bertl
in any case, make sure that you are capturing RGB444 not YCrCb or any subsampling
18:40
jucar
left the channel
18:40
Bertl
as I said, the (sensor) image is processed by the matrix and gamma LUTs, and then combined with the overlay
18:40
Bertl
once that is done, the resulting RGB 8bit values are encoded for HDMI
18:41
niemand
yes, the sensor is ok
18:41
niemand
we havent experimented with luts etc. yet
18:41
Bertl
so if the overlay is correct, then the 'processed' sensor image has to be fine as well
18:42
Bertl
btw, you can simply try with loading a few overlays or even images from SD card
18:42
niemand
is suspect the subsampling, but needs to be investigated.
18:42
niemand
s/is/i/
18:42
philgrandeC_
joined the channel
18:43
Bertl
if you have a specific recording system you want to be tested with the camera, the best way is to send it to us and we will check it
18:44
philgrandeC__
joined the channel
18:44
philgrandeC
left the channel
18:46
philgrandeC_
left the channel
18:47
niemand
We can't set the subsampling in the card for the input.
18:47
Napejts
left the channel
18:50
philgrandeC__
left the channel
18:50
niemand
Axiom beta 1080p30 HDMI -> Decklink mini recorder: rosa/gruen
18:50
niemand
Axiom beta 1080p30 HDMI -> intensity shuttle HDMI out -> decklink mini recorder: works
18:51
niemand
other cameras work, directly connected to the decklink mini recorder
18:51
philgrandeC
joined the channel
18:54
niemand
with some other capture cards it doesn't work at all
18:56
niemand
the intensity pro 4k and studio
18:56
g3gg0
left the channel
18:58
niemand
this is probably hard to debug as you can't look into the capture cards
19:01
philgrandeC
left the channel
19:06
Spirit532
probably some deviation from spec/standard
19:17
niemand
because it's HDMI
19:18
niemand
we never expected that everything works out of the box
19:24
niemand
Bertl, would it be possible to output the stream encoded via ethernet?
19:32
niemand
This is what I get: https://sebix.at/tmp/axom_decklink_mini_recorder.jpg
19:33
Spirit532
niemand, you could stream via ethernet
19:33
Spirit532
but
19:33
Spirit532
the speed won't be pretty
19:34
niemand
Spirit532, can axiom encode to mpeg/h.264?
19:34
Spirit532
it's got an FPGA
19:34
Spirit532
it can encode into alien communications if you can write a core
19:36
niemand
but i dont know if the encoder runs on the fpga. if it does, great :) would be much less problematic
19:37
Spirit532
there is no encoder.
19:37
Spirit532
you have to make one.
19:41
niemand
is it possible to set the shutter speed?
19:45
se6astian
yes, you set the shutter through the exposure time
19:45
se6astian
see cmv_snap3 in wiki
19:45
niemand
no, for video
19:46
niemand
And how to set the gamma curve for the beta? I only found this for alpha: https://wiki.apertus.org/index.php/Axiom_Alpha_Software#LUTs
19:46
niemand
we currently have ~10fps
20:04
niemand
theory by clemens: is the blue led flashing with the same rate as the fps?
20:08
Bertl
okay, no, streaming via gigabit ethernet is not a good option
20:08
Bertl
encoding on the Beta is doable, but consumes a lot of resources and probably won't work above full HD
20:08
niemand
with 720p?
20:09
Bertl
regarding shutter, you set the exposure time and the sequencer alignes the exposures with the HDMI frame rate
20:09
Bertl
so, if you have 60 FPS HDMI output, you can get 60 or 30 or 15 or 10 ... FPS
20:10
Bertl
the actual output frame rate is determined by the exposre plus transfer time
20:10
Bertl
and yes, the blue LED flashes for each frame :)
20:10
Bertl
for the gamma curve, there is a shell script and a C tool which adjusts the LUTs
20:11
Bertl
regarding encoding, there is no available solution at the moment, so somebody would have to write it
20:12
niemand
what are these scripts and tools for the gamma curve?
20:13
niemand
is it possible to get the current frame rate?
20:15
Bertl
btw, the image you linked looks like YCrCb
20:16
niemand
can the axiom send in this mode?
20:16
Bertl
lut_conf3 is the C tool to set any LUTs including the gamma LUTs
20:16
Bertl
and gamma_conf.sh is the script which allows to set gamma values and program the gamma LUTs
20:17
Bertl
@YCrCb no, not yet, but it would be possible to add a conversion if necessary
20:17
Bertl
currently we only generate RGB444
20:19
niemand
ah, pmem is ./pmem
20:20
niemand
just fixed this in the wiki
20:21
niemand
Hm, "./lut_conf3 -r < /tmp/lut.save" says "mapped .." but doesnt exit.
20:34
Bertl
careful with changes to the wiki, this is for the Alpha
20:34
Bertl
i.e. don't change anything you haven't verified on an AXIOM Alpha :)
20:34
Bertl
best would be to make a similar page for the Beta and adjust it there
20:36
niemand
it doesnt work either
20:44
Bertl
what doesn't work?
20:45
niemand
./lut_conf3
20:51
niemand
off for now/today
20:59
niemand
left the channel
21:59
philgrandeC
joined the channel
22:03
philgrandeC
left the channel
22:29
Alex_Chooks_
left the channel
22:41
se6astian
changed nick to: se6astian|away
23:00
tusle
joined the channel
23:02
pusle
left the channel
23:21
Bertl
off to bed now ... have a good one everyone!
23:21
Bertl
changed nick to: Bertl_zZ
00:05
kaiserlich
left the channel