EMFM Retrospective
22 views
Skip to first unread message
Chris Roberts
Sep 4, 2012, 8:01:47 AM9/4/12
to uk-hack-c...@googlegroups.com
Hi all,
So, EMF 2012 is done and gone. EMFM operated for 3 days (well, 3.5) on site, live for most of it. We had lots of guests, from master lockpickers to game developers to organisers to hardware hackers to zombies. It was great fun, and thanks go out to everyone who came along! Especially gmc, without whom it's unlikely we would have gotten anywhere.
We also tried to stream video from all the stages for all of the talks. This went slightly less well. We did manage to stream most of the talks in some manner - however only one stage had video and we couldn't composite in the on-screen content, so it was one camera only. The other stage was audio only, as we simply lacked the cameras to hook up to stream with.
Retrospectively, I would suggest that this was down to the fact we didn't have a known working solution when we started - unlike the radio studio which has been used in anger before. A number of people donated a number of cameras, capture devices, workstations etc - however we didn't know for sure that they all worked together before setting them up. A number of items arrived on the day talks were due to start.
To this end, then, I am have made the suggestion that if we do decide to take on the streaming and recording of talks again - we will either need to be able to test the entire setup with plenty of time before the event, or hire in a known working system. Initial research suggests that we can hire in a full setup that will allow us to use several inputs, with overlays and titling, for about £400 for the weekend - which we know works. The infrastructure we had did work - the problem was more the source of the signal than anything else.
The other issue we had was that our team ended up running the AV for the stages much of the time. This is also something I am going to be addressing before the next event.
So I'd like to thank everyone who contributed anything to this project, from advice to technical help to kit donations, and hope to see you at the next camp in 2014, and perhaps the 1 day event due to be organised in 2013. Also, I hear gmc is going to be doing a bit of radio at OHM 2013 https://ohm2013.org/ (amongst a raft of other things!) - which I'm looking forward to attending myself!
To this end, I'll give everyone on to make a few last comments and close off this list to become announce only, until we encounter our next challenge!
Cheers,
Koen Martens
Sep 4, 2012, 3:58:47 PM9/4/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi Chris,
On Tue, Sep 04, 2012 at 01:01:47PM +0100, Chris Roberts wrote:
> We also tried to stream video from all the stages for all of the talks. This
> went slightly less well. We did manage to stream most of the talks in some
> manner - however only one stage had video and we couldn't composite in the
> on-screen content, so it was one camera only. The other stage was audio only,
> as we simply lacked the cameras to hook up to stream with.
On that note, I am currently trying to piece together the recordings from
alpha stage, some of which have 40 dv files per lecture session. Converting
them to ogv (theora/ogg) and m4v (h264/aac).
Was there any video recorded from stage b? I believe it was recorded onto the
camera itself. Anyone have those recordings?
> Retrospectively, I would suggest that this was down to the fact we didn't have
> a known working solution when we started - unlike the radio studio which has
> been used in anger before. A number of people donated a number of cameras,
> capture devices, workstations etc - however we didn't know for sure that they
> all worked together before setting them up. A number of items arrived on the
> day talks were due to start.
Just the bare fact that we had a heterogenous pool of old camera's of unknown
state was the main problem I believe. The software chain Chris has set up worked
beautifully IMHO. Had we rented some prosumer cams with dv out, things would
have been much better without having to worry about weird setups and cameras
that need rebooting every so often.
Also, the machines I brought were great but lacked a bit of disk space. Next time
we should factor that in as well.
One more retrospective note from my end is that we IMHO did not deal well with
managing volunteers. We started way too late to consider the fact that we needed
more than just me and Chris, and when people came to volunteer we (at least I)
wasn't really able to tell them when they would be needed and explain what they
would need to do. So for next time I would suggest paying more attention to
volunteer management and volunteer briefing.
Thanks all for your help! I had a great time doing the a/v stuff, video stuff
and radio!
- - gmc
- --
https://ohm2013.org/ - outdoor hacker conference, August 2013, NL
http://www.sonologic.nl/ - hosting and DBA
http://koenmartens.nl/ - curriculum vitae
https://www.revspace.nl/ - hackerspace in Den Haag, NL
http://signal.hackerspaces.org/ - hackerspace radio
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iEYEARECAAYFAlBGXXYACgkQktDgRrkFPpaY8wCgr9Qe73XBLXsD6hQFVeViUzjt
a+MAnjpGQsWV0D9MiuFtm2RV7sjTEyYk
=IaDI
-----END PGP SIGNATURE-----
Hash: SHA1
Hi Chris,
On Tue, Sep 04, 2012 at 01:01:47PM +0100, Chris Roberts wrote:
> We also tried to stream video from all the stages for all of the talks. This
> went slightly less well. We did manage to stream most of the talks in some
> manner - however only one stage had video and we couldn't composite in the
> on-screen content, so it was one camera only. The other stage was audio only,
> as we simply lacked the cameras to hook up to stream with.
alpha stage, some of which have 40 dv files per lecture session. Converting
them to ogv (theora/ogg) and m4v (h264/aac).
Was there any video recorded from stage b? I believe it was recorded onto the
camera itself. Anyone have those recordings?
> Retrospectively, I would suggest that this was down to the fact we didn't have
> a known working solution when we started - unlike the radio studio which has
> been used in anger before. A number of people donated a number of cameras,
> capture devices, workstations etc - however we didn't know for sure that they
> all worked together before setting them up. A number of items arrived on the
> day talks were due to start.
state was the main problem I believe. The software chain Chris has set up worked
beautifully IMHO. Had we rented some prosumer cams with dv out, things would
have been much better without having to worry about weird setups and cameras
that need rebooting every so often.
Also, the machines I brought were great but lacked a bit of disk space. Next time
we should factor that in as well.
One more retrospective note from my end is that we IMHO did not deal well with
managing volunteers. We started way too late to consider the fact that we needed
more than just me and Chris, and when people came to volunteer we (at least I)
wasn't really able to tell them when they would be needed and explain what they
would need to do. So for next time I would suggest paying more attention to
volunteer management and volunteer briefing.
Thanks all for your help! I had a great time doing the a/v stuff, video stuff
and radio!
- - gmc
- --
https://ohm2013.org/ - outdoor hacker conference, August 2013, NL
http://www.sonologic.nl/ - hosting and DBA
http://koenmartens.nl/ - curriculum vitae
https://www.revspace.nl/ - hackerspace in Den Haag, NL
http://signal.hackerspaces.org/ - hackerspace radio
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iEYEARECAAYFAlBGXXYACgkQktDgRrkFPpaY8wCgr9Qe73XBLXsD6hQFVeViUzjt
a+MAnjpGQsWV0D9MiuFtm2RV7sjTEyYk
=IaDI
-----END PGP SIGNATURE-----
Robert McWilliam
Sep 5, 2012, 6:47:03 AM9/5/12
to uk-hack-c...@googlegroups.com
On Tue, Sep 4, 2012, at 08:58 PM, Koen Martens wrote:
> Was there any video recorded from stage b? I believe it was recorded
> onto the camera itself. Anyone have those recordings?
I have the camera with recordings for Saturday and Sunday.
> Was there any video recorded from stage b? I believe it was recorded
> onto the camera itself. Anyone have those recordings?
I've had a quick look through and the recordings are a bit better than I
expected, need to get them off the camera to really see what the audio
has come out like though. It will probably be the weekend before I have
time to do that. If we do need to stitch in the audio recordings from
the desk: does anyone have access to one of the video editing apps that
do auto alignment?
If anybody knows who it was that was asking about footage of the little
kid entertaining everyone before the safe cracking talk: that is in the
recordings.
Robert
________________________________________________________
Robert McWilliam rm...@allmail.net www.ormiret.com
The opinions expressed herin are not necessarily those of my
employer, not necessarily mine, and probably not necessary.
Koen Martens
Sep 5, 2012, 4:50:17 PM9/5/12
to uk-hack-c...@googlegroups.com
Hi Robert,
On Wed, Sep 05, 2012 at 11:47:03AM +0100, Robert McWilliam wrote:
> On Tue, Sep 4, 2012, at 08:58 PM, Koen Martens wrote:
> > Was there any video recorded from stage b? I believe it was recorded
> > onto the camera itself. Anyone have those recordings?
>
> I have the camera with recordings for Saturday and Sunday.
>
> I've had a quick look through and the recordings are a bit better than I
> expected, need to get them off the camera to really see what the audio
> has come out like though. It will probably be the weekend before I have
> time to do that. If we do need to stitch in the audio recordings from
> the desk: does anyone have access to one of the video editing apps that
> do auto alignment?
That's awesome!
Sully offered to add the audio to the video using some video editing station(s)
at a university (where supposedly he works). Actually, he's probably on this list
as well :)
> If anybody knows who it was that was asking about footage of the little
> kid entertaining everyone before the safe cracking talk: that is in the
> recordings.
I've tweeted it :)
- gmc
On Wed, Sep 05, 2012 at 11:47:03AM +0100, Robert McWilliam wrote:
> On Tue, Sep 4, 2012, at 08:58 PM, Koen Martens wrote:
> > Was there any video recorded from stage b? I believe it was recorded
> > onto the camera itself. Anyone have those recordings?
>
> I have the camera with recordings for Saturday and Sunday.
>
> I've had a quick look through and the recordings are a bit better than I
> expected, need to get them off the camera to really see what the audio
> has come out like though. It will probably be the weekend before I have
> time to do that. If we do need to stitch in the audio recordings from
> the desk: does anyone have access to one of the video editing apps that
> do auto alignment?
Sully offered to add the audio to the video using some video editing station(s)
at a university (where supposedly he works). Actually, he's probably on this list
as well :)
> If anybody knows who it was that was asking about footage of the little
> kid entertaining everyone before the safe cracking talk: that is in the
> recordings.
- gmc
Koen Martens
Sep 9, 2012, 6:56:44 PM9/9/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hash: SHA1
On Wed, Sep 05, 2012 at 11:47:03AM +0100, Robert McWilliam wrote:
> I have the camera with recordings for Saturday and Sunday.
>
> I've had a quick look through and the recordings are a bit better than I
> expected, need to get them off the camera to really see what the audio
> has come out like though. It will probably be the weekend before I have
> time to do that. If we do need to stitch in the audio recordings from
> the desk: does anyone have access to one of the video editing apps that
> do auto alignment?
Did you manage to pull them off the cam?? If you have them, i think the
>
> I've had a quick look through and the recordings are a bit better than I
> expected, need to get them off the camera to really see what the audio
> has come out like though. It will probably be the weekend before I have
> time to do that. If we do need to stitch in the audio recordings from
> the desk: does anyone have access to one of the video editing apps that
> do auto alignment?
best plan is to get Chris to give you an account on his storage box, so
you can copy them onto that. I'll then do the same with the audio we
captured, and then Sully can go wild with that during this week perhaps?
As for the EMFM radio recordings, I have all of it complete now, just need
to cut up the last few hours.
- - gmc
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iEYEARECAAYFAlBNHqwACgkQktDgRrkFPpaC5QCfa6u4JqyvcSP5Ixwu1SIuIZBl
lX4AoLM786iBYXf/esJeY8No8yfPT/ju
=GK7v
-----END PGP SIGNATURE-----
Robert McWilliam
Sep 18, 2012, 7:39:12 PM9/18/12
to uk-hack-c...@googlegroups.com
On Sun, Sep 9, 2012, at 11:56 PM, Koen Martens wrote:
> On Wed, Sep 05, 2012 at 11:47:03AM +0100, Robert McWilliam wrote:
> > I have the camera with recordings for Saturday and Sunday.
>
> On Wed, Sep 05, 2012 at 11:47:03AM +0100, Robert McWilliam wrote:
> > I have the camera with recordings for Saturday and Sunday.
>
> Did you manage to pull them off the cam?? If you have them, i think the
> best plan is to get Chris to give you an account on his storage box, so
> you can copy them onto that. I'll then do the same with the audio we
> captured, and then Sully can go wild with that during this week perhaps?
Sorry for the horribly slow response.
> best plan is to get Chris to give you an account on his storage box, so
> you can copy them onto that. I'll then do the same with the audio we
> captured, and then Sully can go wild with that during this week perhaps?
I have the footage off the camera. The audio isn't too bad. More
annoying is that in some of them the screen refresh rate is interacting
badly with the camera shutter speed and it flickers.
I'm away from home at the moment, but get back on Friday so could start
uploading them then if I get access to the storage box (or I can
probably find space on one of my machines).
Chris Roberts
Sep 18, 2012, 8:35:43 PM9/18/12
to uk-hack-c...@googlegroups.com
Cheers dude!
Oh, one thing to note, the storage box will need to be relocated, as bytemark want to start charging for it soon.... meep!
--
You received this message because you are subscribed to the Google Groups "uk-hack-camp-radio" group.
To post to this group, send an email to uk-hack-c...@googlegroups.com.
To unsubscribe from this group, send email to uk-hack-camp-ra...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/uk-hack-camp-radio?hl=en-GB.
Koen Martens
Sep 20, 2012, 4:05:14 PM9/20/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hash: SHA1
On Wed, Sep 19, 2012 at 01:35:43AM +0100, Chris Roberts wrote:
> Cheers dude!
>
> Oh, one thing to note, the storage box will need to be relocated, as bytemark
> want to start charging for it soon.... meep!
You have a place for it then?
> Cheers dude!
>
> Oh, one thing to note, the storage box will need to be relocated, as bytemark
> want to start charging for it soon.... meep!
I can get Robert the link for uploading the stuff to wipkip.nikhef.nl if
the storage box is going to disappear..
- - gmc
- --
https://ohm2013.org/ - outdoor hacker conference, August 2013, NL
http://www.sonologic.nl/ - hosting and DBA
http://koenmartens.nl/ - curriculum vitae
https://www.revspace.nl/ - hackerspace in Den Haag, NL
http://signal.hackerspaces.org/ - hackerspace radio
-----BEGIN PGP SIGNATURE-----
https://ohm2013.org/ - outdoor hacker conference, August 2013, NL
http://www.sonologic.nl/ - hosting and DBA
http://koenmartens.nl/ - curriculum vitae
https://www.revspace.nl/ - hackerspace in Den Haag, NL
http://signal.hackerspaces.org/ - hackerspace radio
Version: GnuPG v1.4.12 (GNU/Linux)
iEYEARECAAYFAlBbdvoACgkQktDgRrkFPpYRcgCgl3EeOh/YYw+6qrkF3aoxmC3C
rh8AniDoD+ljccbL9q9GTRgFZKla5Zhl
=qIKj
-----END PGP SIGNATURE-----
Chris Roberts
Sep 20, 2012, 5:02:11 PM9/20/12
to uk-hack-c...@googlegroups.com
On 20 September 2012 21:05, Koen Martens <g...@sonologic.nl> wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On Wed, Sep 19, 2012 at 01:35:43AM +0100, Chris Roberts wrote:You have a place for it then?
> Cheers dude!
>
> Oh, one thing to note, the storage box will need to be relocated, as bytemark
> want to start charging for it soon.... meep!
Working on that part at the moment ...
I can get Robert the link for uploading the stuff to wipkip.nikhef.nl if
the storage box is going to disappear..
Might be a good idea!
Koen Martens
Sep 27, 2012, 2:13:59 PM9/27/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hash: SHA1
- - gmc
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iEYEARECAAYFAlBkl2cACgkQktDgRrkFPpZp9QCfTX8cGXeZv5b5Y5HghGA/DFJK
muQAnRfuQ2BfqI/CXHuSu0SuLVrcx68G
=NrpM
-----END PGP SIGNATURE-----
Koen Martens
Oct 11, 2012, 7:54:28 AM10/11/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi Robert,
Hash: SHA1
Any luck on the videos yet? Can we get them! People are increasingly bugging
me for them....
- - gmc
> --
> You received this message because you are subscribed to the Google Groups "uk-hack-camp-radio" group.
> To post to this group, send an email to uk-hack-c...@googlegroups.com.
> To unsubscribe from this group, send email to uk-hack-camp-ra...@googlegroups.com.
> For more options, visit this group at http://groups.google.com/group/uk-hack-camp-radio?hl=en-GB.
>
>
> You received this message because you are subscribed to the Google Groups "uk-hack-camp-radio" group.
> To post to this group, send an email to uk-hack-c...@googlegroups.com.
> To unsubscribe from this group, send email to uk-hack-camp-ra...@googlegroups.com.
> For more options, visit this group at http://groups.google.com/group/uk-hack-camp-radio?hl=en-GB.
>
>
- --
https://ohm2013.org/ - outdoor hacker conference, August 2013, NL
http://www.sonologic.nl/ - hosting and DBA
http://koenmartens.nl/ - curriculum vitae
https://www.revspace.nl/ - hackerspace in Den Haag, NL
http://signal.hackerspaces.org/ - hackerspace radio
-----BEGIN PGP SIGNATURE-----
https://ohm2013.org/ - outdoor hacker conference, August 2013, NL
http://www.sonologic.nl/ - hosting and DBA
http://koenmartens.nl/ - curriculum vitae
https://www.revspace.nl/ - hackerspace in Den Haag, NL
http://signal.hackerspaces.org/ - hackerspace radio
Version: GnuPG v1.4.12 (GNU/Linux)
iEYEARECAAYFAlB2s3QACgkQktDgRrkFPpYK9wCdGKAfoNy3caxA/arhlt0fsMnq
exEAoJDyp4JFAIc/TKlv5S2UKrg+SwJz
=X0hz
-----END PGP SIGNATURE-----
Robert McWilliam
Oct 16, 2012, 9:24:41 AM10/16/12
to uk-hack-c...@googlegroups.com
On Thu, Oct 11, 2012, at 12:54 PM, Koen Martens wrote:
> Any luck on the videos yet? Can we get them! People are increasingly
> bugging me for them....
Sorry for not moving faster with this. It's still on my TODO list - I'll
> Any luck on the videos yet? Can we get them! People are increasingly
> bugging me for them....
move it a bit close to the top :)
I've topped-and-tailed a couple of the talks so they should be ready to
go public. I was exporting them at stupidly high bit rate mpeg-2 so need
to transcode to something sane: what are we using for the rest of the
videos?
I have freed up some space on one of my servers so can start uploading
now.
They will appear at emf.boadegl.com
Koen Martens
Oct 16, 2012, 2:41:01 PM10/16/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi,
Hash: SHA1
On Tue, Oct 16, 2012 at 02:24:41PM +0100, Robert McWilliam wrote:
> On Thu, Oct 11, 2012, at 12:54 PM, Koen Martens wrote:
> > Any luck on the videos yet? Can we get them! People are increasingly
> > bugging me for them....
>
> Sorry for not moving faster with this. It's still on my TODO list - I'll
> move it a bit close to the top :)
>
> I've topped-and-tailed a couple of the talks so they should be ready to
> go public. I was exporting them at stupidly high bit rate mpeg-2 so need
> to transcode to something sane: what are we using for the rest of the
> videos?
>
> I have freed up some space on one of my servers so can start uploading
> now.
>
> They will appear at emf.boadegl.com
VIDEO: [theo] 720x576 0bpp 25.000 fps 0.0 kbps ( 0.0 kbyte/s)
Load subtitles in ./
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 53.35.0 (external)
Mismatching header version 53.32.2
Selected video codec: [fftheora] vfm: ffmpeg (FFmpeg Theora)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 2 ch, s16le, 256.0 kbit/16.67% (ratio: 32000->192000)
Selected audio codec: [ffvorbis] afm: ffmpeg (FFmpeg Vorbis)
==========================================================================
And for the m4v:
VIDEO: [H264] 720x576 24bpp 25.000 fps 1245.6 kbps (152.1 kbyte/s)
Clip info:
major_brand: mp42
minor_version: 0
compatible_brands: mp42isomavc1
creation_time: 2012-09-04 23:01:43
encoder: HandBrake 0.9.8 2012071800
Load subtitles in ./
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 53.35.0 (external)
Mismatching header version 53.32.2
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 2 ch, s16le, 160.0 kbit/10.42% (ratio: 19999->192000)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
- - gmc
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iEYEARECAAYFAlB9qj0ACgkQktDgRrkFPpZ9qQCfey79cyUAgGz1sBrjrakpbHnF
0Q0An3jvBtPHTFq5ojYY03aR8tA3Bmn3
=qEQF
-----END PGP SIGNATURE-----
Chris Roberts
Nov 17, 2012, 12:09:54 PM11/17/12
to uk-hack-c...@googlegroups.com
Boing!
Any news on this?
Might just be my DNS being crappy (it has been a bit lately) but that
hostname doesn't appear to resolve?
Any news on this?
Might just be my DNS being crappy (it has been a bit lately) but that
hostname doesn't appear to resolve?
Koen Martens
Dec 16, 2012, 1:56:13 PM12/16/12
to uk-hack-c...@googlegroups.com
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Bumpedybump!
Hash: SHA1
Any luck on those recordings?
EMFM is almost 4 months ago now, about time we get those videos up i would say :)
- - gmc
1yEAoLpee4dKrArwTu1K5W/c+7syjVHj
=ezFI
-----END PGP SIGNATURE-----
Reply all
Reply to author
Forward
0 new messages