Re: Preparing UTFPR for the video team
On Thu, Aug 16, 2018 at 7:27 PM Louis-Philippe Véronneau
<pollo@debian.org> wrote:
>
> On 2018-08-16 19:30, Carl Karsten wrote:
> > * Opsis
> > This will need a small computer, really anything with usb2 and gig
> > eathernet that can run linux.
>
> The opsis board we gave them has a Minnowboard Turbot inside its case.
>
> > * minipc
> > Specs?
> > i3 2gig of ram is acceptable. 10gig of disk per hour of recording.
> > pci-e slot for the capture card.
>
> In our recent tests, a 2015 i5 was not sufficient to run voctomix
> properly. I would highly recommend you get a machine with a recent i7 CPU.
What tests?
I just used a 2009 i3 to record 2 days of PyOhio.
I have it running now with 2 gst videotestsrc/audiotestsrc which are
more cpu bound than reading from the BM or network card.
core, gui, 2 sources, 2 file sync.
htop shows all 4 cores around 60%
/proc/cpuinfo
model name : Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz
load average: 6.44, 6.33, 5.84
juser@cnt2:~$ free -h
total used free shared buff/cache available
Mem: 1.8G 888M 151M 254M 798M 487M
juser@cnt1:~$ ps auxw --sort -pcpu
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
juser 22156 78.9 5.4 2278132 100580 ? Rl 00:39 27:03
/usr/bin/python3 /usr/bin/voctogui
juser 22047 58.4 6.4 2713532 120364 ? Ssl 00:38 20:21
/usr/bin/python3 /usr/bin/voctocore -v
juser 22111 27.9 4.1 669180 76600 ? Sl 00:38 9:44
ffmpeg -nostdin -i tcp://localhost:11000 -ac 2 -channel_layout 2c -
juser 22128 18.2 1.6 529620 31624 pts/2 Sl+ 00:38 6:21
/usr/bin/python3 /usr/bin/voctomix-ingest
juser 22142 17.4 1.7 529628 31672 pts/3 Sl+ 00:38 6:03
/usr/bin/python3 /usr/bin/voctomix-ingest --port 10001
root 590 0.8 3.3 319148 61888 tty7 Ssl+ Aug01 188:39
/usr/lib/xorg/Xorg :0 -seat seat0 -auth /var/run/lightdm/root/:0 -n
juser 961 0.5 0.9 838392 17692 ? Ssl Aug01 116:35 /usr/bin/conky
> > * Splitter HDMI
> > not needed.
> >
> > * Cameras (borrowed from the university
> > What model?
> > they should have balanced audio in, and SDI or HDMI output.
>
> SDI is preferable to HDMI, since you'll have to use HDMI extenders if
> you go with HDMI.
I use HDMI, and I don't use extenders.
>
> The camera should be able to do 720p.
>
> > You should have the talk schedule figured out a week or so in advance,
> > and put together the title and footer svg files. you can do this
> > after the event, but it is much less likely it will get done.
> >
> >
> >
> > On Thu, Aug 16, 2018 at 5:42 PM Rodrigo Siqueira
> > <rodrigosiqueiramelo@gmail.com> wrote:
> >>
> >> We don't have the capture board yet; we will try to borrow or buy it. Do
> >> we need more equipment than that? Does someone have any advice on this
> >> first attempt?
>
> If you buy capture cards, please try to get the same cards we have. Ours
> are Blackmagic Decklink Mini Recorder and cost around 150USD/card.
>
> It might also be a good idea to think about getting tally lights [1]. We
> bought serial PCI-e cards for our mixing computers and pair those with
> serial to ethernet adapters and a serial led at the end.
>
> In theory, the 'Hardware' section of our documentation [2] lists
> everything you need.
>
> [1]
> https://debconf-video-team.pages.debian.net/docs/hardware.html#tally-lights
> [2] https://debconf-video-team.pages.debian.net/docs/hardware.html
>
> --
> ,''`.
> : :' : Louis-Philippe Véronneau
> `. `'` pollo@debian.org / veronneau.org
> `-
>
--
Carl K
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