Monday, 2015-08-31

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CarlFKmithro: cpu on the slave is about 25% on each of 4 cores.  so should be able to handle a 2nd device, assuming a 2nd usb bus I guess00:40
mithroCarlFK: your machines are pretty old right?00:41
CarlFKslave:   Intel(R) Core(TM) i5 CPU       M 540  @ 2.53GHz00:42
CarlFKdvswitch Intel(R) Core(TM)2 Duo CPU     T9400  @ 2.53GHz00:43
CarlFKI think the slave cost me about $300 a little over a year ago00:43
mithroCarlFK: try a "lsusb -t"00:45
CarlFKI am not really sure what I am looking at00:46
CarlFKI see 2 buses, but not sure how to tell what the ports are hooked to00:48
mithroCarlFK: paste it somewhere?00:49
mithroCarlFK: plug something into all your ports and see what the tree shows :P00:50
CarlFKmithro: you are still conected..00:50
mithroCarlFK: yes00:50
mithroCarlFK: but I don't need to be any more00:50
CarlFKplugged in 2 thumb drives.  Atlys is in the other 2 ports.
tpbTitle: Ubuntu Pastebin (at
mithroYeah - it looks like your device has two busses - one for the external ports, one for the internal functionality00:55
CarlFKoh, my .1 second claim is a bit off.  the sweep hand takes about 5 seconds per revolution.  I think that gave me the right amount of motion00:56
CarlFKbut whatever it is, it seems fine.00:57
CarlFKI am trying to figure out how to get a twinpact involved too so I can compare00:57
CarlFKbut I need to take a shower and get a pizza00:58
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tvCommitBot[dvsource-v4l2-other] mithro created carlfk (+3 new commits):
tvCommitBotdvsource-v4l2-other/carlfk 1d9e5a2 Carl Karsten: Fix PAL-16:9 mode.01:08
tvCommitBotdvsource-v4l2-other/carlfk 8dfc315 Carl Karsten: Fixing the pixel aspect ratio settings.01:08
tvCommitBotdvsource-v4l2-other/carlfk 2eaa06e Carl Karsten: Making the color space work on all modes.01:08
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tvCommitBot[dvsource-v4l2-other] mithro opened pull request #13: More fixes to get the HDMI2USB working (master...carlfk)
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mithroCarlFK: you should be able to take one of the Atlys outputs into a HDMI2VGA then the Twinpact01:12
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tvCommitBot[dvsource-v4l2-other] mithro pushed 1 new commit to master:
tvCommitBotdvsource-v4l2-other/master 31ee6ce Tim Ansell: Merge pull request #13 from timvideos/carlfk...01:13
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mithroCarlFK: I merged all the changes on your machine into master.01:13
mithroCarlFK: still don't have a working dvswitch :(01:14
CarlFKget virtualbox working.  that is probably easier than dvswtich01:30
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CarlFK_florent_ mithro.. someone... what does encoder quality do?04:08
mithroSee the jpeg wikipedia document.04:09
mithroThe sample photographs section04:13
tpbTitle: JPEG - Wikipedia, the free encyclopedia (at
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mithroHey rohitksingh!04:38
rohitksinghmithro: hi!04:38
mithroCarlFK: did that make sense?04:39
CarlFKmithro: no.  why don't we want 100 ?04:39
mithroSmaller quality number produce smaller frame sizes which give higher frame rates.04:40
mithroQ100 gets about 10-15 fps04:40
CarlFKah, I suspected something like that04:41
CarlFKso we want 100 for presentations, and lower for camera ?04:41
mithroThe status should report the fps the encoder is getting.04:41
mithroCarlFK: you'll need to play with it and see how it goes04:42
mithroI would guess 50 for camera and 85 for presentations04:43
rohitksinghCarlFK: you're correct. camera should have higher fps(lower encoder quality) and projectors should have higher quality04:43
mithroCarlFK: play some content through it and see what the result looks like04:45
mithroCarlFK: I'm pretty sure when going into dvswitch a q=50 is going to be pretty much indistinguishable from q=10004:45
CarlFKmithro: maybe.  100 seems like the safe way to go, not sure why I would want to drop it.04:49
mithroCarlFK: it would look pretty bad if the presentation had video in it04:49
CarlFKthats rare enough I don't care04:50
CarlFKI have also spliced in the source video into the talk video.04:50
CarlFKmostly because it is fun now and then04:51
rohitksinghmithro: have you seen this? I bought one of these and took it apart
mithroCarlFK: I feel if your sending it to dvswitch, doing q=50 and getting 30fps is the lowest effort04:58
mithrorohitksingh: I've seen many of these type of things04:58
rohitksinghmithro: it uses MS9282 ( ) single chip solution...don't know how they do that!04:59
tpbTitle: 半导体集成电路,模拟数字音视频信号处理 -合肥宏晶微电子 - 产品中心 - 芯片产品 - MS9282 (at
mithrorohitksingh: there are a huge amount of these types of ICs but they are super hard to source05:02
mithro(for us atleast)05:02
rohitksinghmithro: yeah! wouldn't get these outside of china! :)05:02
mithroCarlFK: can you try connecting something to the second HDMI output?05:15
CarlFKi did yesterday. worked like a charm05:15
mithroCarlFK: Well, need to get the cdc-acm serial port working again so you can get rid of the second USB cable05:34
CarlFKmithro: i am not to worried about the 2nd usb cable05:40
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tvCommitBot[dvsource-v4l2-other] mithro created c3voc (+1 new commit):
tvCommitBotdvsource-v4l2-other/c3voc 784e5b9 Tim 'mithro' Ansell: Adding C3VOC dvswitch version support.05:42
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mithroCarlFK: the Opsis doesn't have the two uarts05:42
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tvCommitBot[dvsource-v4l2-other] mithro pushed 2 new commits to c3voc:
tvCommitBotdvsource-v4l2-other/c3voc dbb0afd Tim 'mithro' Ansell: Allow C3VOC source ID to be specified.05:48
tvCommitBotdvsource-v4l2-other/c3voc 39eba08 Tim 'mithro' Ansell: Use same command line argument as the VOC tools.05:48
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mithroCarlFK: so, do you think you'll have a chance to use this in production or take it to PS1 and plug as many source laptops to capture from into it as possible?05:50
CarlFKmithro: I hope to use it in production in 4 days05:50
CarlFKand I can try a few  machines at PS1 in 2 days.05:51
CarlFKmithro: can the firmware be set to boot up like so:05:52
CarlFK 720p, 1 hdmi input feeds the encoder and both hdmi outputs05:52
mithroCarlFK: I believe you should be able to submit a patch to do that - at that level it is all C code05:53
tpbTitle: HDMI2USB-misoc-firmware/firmware/lm32 at master · timvideos/HDMI2USB-misoc-firmware · GitHub (at
CarlFKmithro: getting into that is low on my priority list05:54
mithroCarlFK: modify that, type "make load-lm32-firmware" and then at the "HDMI2USB>" prompt type reboot05:54
CarlFKif it is easy, do it.  otherwise pfft.  i can live with it as is05:54
CarlFKI still have vids from PyOhio and NYC to finish up05:55
mithroCarlFK: reasonable easy to do, but not high on my priority list - maybe you can convince rohitksingh05:56
CarlFKuntil the setup is smoother I expect to spend 10-20 min getting it setup05:57
mithroCarlFK: the firmware is still moving pretty fast05:58
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mithroCarlFK: once it stablizes a bit more we can burn it onto your Atlys and then it'll just come up without needing to do anything06:01
CarlFKmithro: it seems like the firmware is close to a stable release so that there is something to fall back to if things go wonky in production06:04
mithroCarlFK: if you do some testing and things work okay, then we should maybe tag it 0.0.106:05
CarlFKmithro: Wed i think i will have a chance to test on the presenters laptop for thrunsday's talk .. hopefully there will be one or two more talks.  it's the Django group, about as small and informal as can be06:11
mithroCarlFK: okay - it would be good to check with Mac + Window computers too06:13
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mithroI think I'm going to head to bed06:24
CarlFKme too06:24
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CarlFKsomewhere I created a list of things that needed packaging.  anyone know where?21:40
CarlFKso I can add:
tpbTitle: HDMI2USB-misoc-firmware/ at master · timvideos/HDMI2USB-misoc-firmware · GitHub (at
mithroCarlFK: packaging list ->
tpbTitle: Debian Packaging · timvideos/streaming-system Wiki · GitHub (at
CarlFKbingo.  thanks.21:41
mithroCarlFK: you'll notice that the stuff is already linked from there :P21:42
CarlFKmithro: 4. Compile and install binutils. Take the latest version from GNU.21:45
CarlFKwhat version/feature is required?21:45
mithroCarlFK: what do you mean?21:54
mithroCarlFK: we need a binutils compiled to support the lm32 architecture21:55
CarlFKit says "latest version" as if the packaged version is missing something21:59
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mithroCarlFK: No, it just means we don't need an old version23:32
CarlFKmithro: I would like to replace Compile with apt-get install.  but I need to know what is required.23:43
mithroCarlFK: so you need to package binutils and gcc cross compilers for the lm32 architecture23:48
mithroCarlFK: like this ->
tpbTitle: Ubuntu – Details of package gcc-4.8-powerpc-linux-gnu in trusty (at
mithroCarlFK: Helmut was suggesting we use to do it23:54
tpbTitle: HelmutGrohne/rebootstrap - Debian Wiki (at
mithroCarlFK: but we ran into the problem of lacking a Linux kernel headers for the device23:54

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