Notes from Video/Audio Streaming in Second Life Class Hosted by Josephine Junot

On April 10 Josephine Junot hosted a fantastic class on how to stream audio and video in Second Life. For your convenience, the notes from the class are below. Many thanks to Josephine for presenting such a valuable and exciting class!


9:00-10:00 Video/audio streaming in SL class (Josephine Junot)
[9:20] Glitteractica Cookie: ok then!
[9:20] Glitteractica Cookie: let’s move on to the main event
[9:20] Canis Looming: I would like to ask has any one hear from Veriodd Fellow?
[9:20] Penguin Kuhn: yes, he couldn’t make it today, but is around
[9:21] Penguin Kuhn: ok, josephine!!!
[9:21] Glitteractica Cookie: Veri oddfellow is also bradford lewis, and yes i heard from him on facebook yesterday
[9:21] Penguin Kuhn: yay!!
[9:21] Canis Looming: good
[9:21] Glitteractica Cookie: Josephine Junot is teaching a class on Video/audio streaming
[9:21] Glitteractica Cookie: now!
[9:21] Dansei Tigerpaw: whew
[9:21] Glitteractica Cookie: give it up y’all!
[9:21] Buffy Beale: claps madly for Josephine
[9:21] Josephine Junot: Hi, all! πŸ™‚
[9:21] Dansei Tigerpaw: clapping
[9:21] Louise Later: :))
[9:22] Bjorlyn Loon: Still text?
[9:22] any1 Gynoid: <— scurries to take notes! oy!
[9:22] Zed Canucci: woohoo
[9:22] Josephine Junot: Ok, I’ll just give an overview of live streaming via QuickTime Broadcaster into SL.
[9:23] Josephine Junot: I’ll go thru some basic guidelines for setting up a stream. You can tweak this as necessary. Then I’ll go over some options for host services.
[9:23] Glitteractica Cookie: this is so cool
[9:23] Josephine Junot: You can stream video and audio (or just video, or just audio) via QT Broadcaster.
[9:23] Josephine Junot:
[9:23] any1 Gynoid: is QT B a freebie?
[9:23] Josephine Junot: yes, you can download it at that URL for free
[9:24] Louise Later: neat1
[9:24] Glitteractica Cookie: i think that someone should take the chat log and make this into a blog entry to be archived on wiki, don’t y’all?
[9:24] Glitteractica Cookie: any takers?
[9:24] Glitteractica Cookie: or maybe josephine already has this written up
[9:24] any1 Gynoid: kk but only runs on mac
[9:24] Marty Snowpaw: Good idea
[9:24] DrG Zeiler: I will get it on wiki
[9:24] Zed Canucci: hmmm
[9:24] Josephine Junot: so QuickTime Broadcaster is free app, however using a hosted streaming service is not always free (there are a few options, and I’ll be going over them later)
[9:24] Zed Canucci: no pc version, eh?
[9:25] Josephine Junot: yes, it only runs on mac, however QuickTime is the only format that SL accepts for video streams.
[9:25] any1 Gynoid: i have PC options… I’ll send notecards to any1 who wants info
[9:25] Ethelred Weatherwax: Everyone should have a Mac
[9:25] Dansei Tigerpaw: I want one
[9:25] Josephine Junot: so if you want to stream video, it has to be encoded into a QuickTime format
[9:25] Zed Canucci: me too any1
[9:25] Waxakla Voom: Everyone!!
[9:25] jacmacaire Humby: .mov
[9:25] Josephine Junot: if you want to stream audio, you can also do it via shoutcast or icecast (pc options)
[9:26] Glitteractica Cookie: (thanks Dr. G!!!)
[9:26] Josephine Junot: so for now, QT Broadcaster is it for livestreaming video
[9:26] DrG Zeiler: Welcome
[9:27] Josephine Junot: So, once you’ve downloaded and installed QuickTime Broadcaster, hook up your camera to your computer via Firewire or USB (and if you have a separate sound source like a microphone or sound system, connect the line-in to your computer as well).
[9:27] In Kenzo: Good charts of this here:
[9:27] Josephine Junot: and btw, I have these screenshots on my wiki as well, with instructions, at
[9:28] Josephine Junot: yes, thx In Kenzo
[9:29] Josephine Junot: and again, I want to emphasize that these are ‘guidelines’ – you can tweak the settings as you need to
[9:29] Josephine Junot: so for Video Settings:
[9:29] Josephine Junot: Video settings:
* check “Enable Video Stream” if using video
* Size: 320×240 or 240×180
* Compressor: Sorenson Video 3 or H.264
* Quality: High or Best
* fps: 15
* keyframe: every 150 frames
* Limit Data Rate to: 150 kbits/sec
[9:29] Josephine Junot: for Compressor, I’ve mainly beeing using H.264
[9:30] Josephine Junot: very nice quality
[9:30] Josephine Junot: though you can also use MP4
[9:30] Josephine Junot: or Sorenson Video 3
[9:30] Tech Coleslaw: (sorry gang, gotta go break up a fight in RL. Kids!)
[9:30] Josephine Junot: the latter, Sorenson Video 3, is for older systems (if you suspect your audience will be using some legacy browsers or whatnot)
[9:30] Josephine Junot: but otherwise, I’d go with H.264
[9:31] Josephine Junot: So choose the Source video from the dropdown box (DV Camera, iSight, whatever)
[9:31] Josephine Junot: then a standard size is 320×240
[9:31] Josephine Junot: you can go larger if you need to
[9:31] Josephine Junot: like 640×480
[9:32] Josephine Junot: but know that that will tax the streaming server a little more
[9:32] Josephine Junot: (as well as your audience’s – on the receiving side)
[9:32] Josephine Junot: for Quality, anywhere from Medium to Best is fine (again depending on what quality you want)
[9:33] Josephine Junot: for Frames per second
[9:33] Josephine Junot: I usually do either 15 or 30 fps
[9:33] Josephine Junot: 30 is closer to film
[9:34] In Kenzo: Josephine, do you want to mention microphones and how to adapt your setup for a large room, panel presentation or other space where the on-board mic with your video camera may not work out?
[9:34] Josephine Junot: I’d like to get thru the basic settings first
[9:34] Josephine Junot: but you are welcome to jump in with that πŸ™‚
[9:35] Josephine Junot: so, for Frames per second, I usually do 15 fps but can bump this up to 30 for better quality
[9:35] Josephine Junot: Key frame is flexible. I’ve found that every 150 frames works well
[9:36] Josephine Junot: then Limit data rate:
[9:36] Josephine Junot: this can really vary alot. I’ve found that anything between 150-300 kbps usu works well
[9:37] Josephine Junot: Ok, this is the audio tab
[9:37] Josephine Junot: again, choose your source from the dropdown box (Line-in, or DV camera, etc)
[9:38] Josephine Junot: * check “Enable Audio Stream” if using audio
* un-check “Play-through speaker” (this is to prevent feedback. check it if you want to be sure you have an audio signal coming in.)
* Compressor: MPEG-4 Audio
* Rate: 44.100 kHz
* Size: 16 bit
* Use: Mono (or if the bandwidth is available – stereo)
[9:39] Josephine Junot: if you are using headphones on the computer you’re running QT Broadcaster on, then you can check “Play-through speaker” and you won’t have feedback
[9:39] Josephine Junot: Gain is volume, so you can adjust that as necessary
[9:40] Josephine Junot: I usu use MPEG-4 Audio for the Compressor and rate=44,100 kHz, though depending on the stability of your stream/network, you can bump that down to 22,050 kHz
[9:40] Josephine Junot: any questions so far?
[9:40] Buffy Beale: going good Jose
[9:40] Waxakla Voom: very cool!!!
[9:41] Josephine Junot: In Kenzo – do you want to jump in with types of audio for diff rooms?
[9:41] Smash Lane: Do you know if there any major difference between shoutcast and Icecast?
[9:41] Smash Lane: for audio streaming?
[9:42] Josephine Junot: I’m not so familiar with either shoutcast or icecast, sorry. I know ppl that use both and they seem to think either option works well
[9:42] In Kenzo: Just wanted to note that in some cases you want a detachable mic
[9:42] In Kenzo: You may not be able to get your video camera in the right zone for audio + video capture, and it helps to have another way to get the audio in if you’re working in a large room like a conference.
[9:42] Smash Lane: heard that too, thanks
[9:42] Josephine Junot: right, so you can catch sound around the room, away from the camera
[9:42] Glitteractica Cookie: what is a low cost mic that you reco, in kenzo?
[9:43] In Kenzo: I’m using a simple Logitech USB mic for $50 but there are tons out there, if you are working with a video camera you know you may want to find a mic that plugs right into your camera. Much easier to handle sound that way.
[9:43] In Kenzo: Some video cameras allow you to detach the mic.
[9:44] Josephine Junot: I sometimes use a boundary mic (like the kind you might find on a conference table around phone conference, or on a stage) — let me see what kind it is…
[9:44] Josephine Junot is looking
[9:44] In Kenzo: Sound quality sinks many mixed reality events, along with lack of a wired connection. Don’t plan to use Wifi to stream your event!
[9:44] In Kenzo: Plug your laptop into a cable into a wall if you want the video + audio to be stable enough for your web audiences.
[9:44] Glitteractica Cookie: this is very helpful stuff!
[9:45] Josephine Junot: the boundary mic I use is an Audio-Technica AT8531
[9:45] Waxakla Voom: good point In Kenzo , makes sense
[9:45] In Kenzo: Awesome, thanks Josephine for walking us through the settings too, that’s often the most daunting task for someone new to this.
[9:45] Josephine Junot: you can get one of those for about $60-70
[9:46] Josephine Junot: ok any more questions about audio before we move on to network settings?
[9:46] Buffy Beale: no, still with u
[9:46] Josephine Junot: k
[9:47] Josephine Junot: for Network settings:
* Transmission: Automatic Unicast
* Host name:
[9:47] Josephine Junot: Host will depend on what streaming service you are using
[9:48] Josephine Junot: so in this example, I’m using a university’s streaming server and the host name is
[9:48] Louise Later: how do you find that out?
[9:48] Josephine Junot: if you’re using a service, say the Stream Guys, then it might look like Host Name:…(some numbers following it)
[9:49] Josephine Junot: the streaming service will give that host name to you
[9:49] Smash Lane: usually they tell you the numbers when you rent a stream
[9:49] Josephine Junot: yes
[9:49] Louise Later: ty
[9:49] Josephine Junot: so now, about services…
[9:49] Josephine Junot: the cost will depend on the number of people you expect will be watching the stream and the bitrate
[9:49] Josephine Junot: the bitrate (the higher, the better the quality — anywhere btwn 150-300 kbps is usually the normal)
[9:50] any1 Gynoid: Comment on Streaming Services: i suggest everyone visit Jamie Otis’ store in SL… nice guy, and he’s got great help notecards… also answers questions… let me use his cards in my classes too…
[9:50] In Kenzo: So for video, a 2 hour event with 100 people watching your stream can cost $50 or higher…..while audio streaming is very low cost. Jamie Otis is great, yes!
[9:50] Josephine Junot: yes, exactly, thanks!
[9:51] Josephine Junot: so for example, I use the Stream Guys quite a bit
[9:51] In Kenzo: Depends on number of people watching + the quality as bitrate……video can get expensive if you expect thousands to tune in online. There are monthly plans or one-time-use options out there.
[9:51] Josephine Junot: and if you look at their live streaming page you can see where you can input the intended audience number and bitrate and it calculates an approximation
[9:51] Glitteractica Cookie: do you recommend them over dreamcast
[9:52] Josephine Junot: and yes, the monthly and single event options are also sometimes better
[9:52] Josephine Junot: (Single Event option)
[9:52] Waxakla Voom: Josephine can u use another server, like a school server (new school webspace)
[9:53] Josephine Junot: so there are many other services out there, and without trying to pimp the stream guys anymore, I must say that their customer service is excellent
[9:53] Josephine Junot: and that’s all I’ll say abt them πŸ™‚
[9:53] any1 Gynoid: Juni and Medera are calling me away on Earth Week biz… cya everyone HUGGGZZZ!
[9:53] Glitteractica Cookie: ok, great!
[9:53] Josephine Junot: but yes, you can use a school’s server too
[9:53] Josephine Junot: you can also affiliate yourself with a university and use their quicktime streaming server
[9:54] Josephine Junot: that would be the cheaper option πŸ™‚
[9:54] Waxakla Voom: or any other server, like if i have a space with 1and1 for example
[9:54] Josephine Junot: right, you just have to make sure they have a quicktime streaming server (they don’t always have one)
[9:54] Josephine Junot: or you can also set up your own quicktime streaming server:
[9:55] Josephine Junot: (or you can help the university/school you’re working with to set one up – it’s basically an installation of Mac OS X Server
[9:55] Josephine Junot: np πŸ™‚
[9:56] Josephine Junot: whatever machine you choose to run Mac OS X Server, should be a dedicated one
[9:56] Josephine Junot: so once you have the streaming service and host name
[9:56] Josephine Junot: just put the host name in there, username, password
[9:57] Josephine Junot: click “Record to disk” if you want to save the stream
[9:57] Josephine Junot: and then click Broadcast
[9:57] Josephine Junot: and that’s it!
[9:57] Josephine Junot: you can set where you want the recorded stream to be saved under Preferences
[9:58] Josephine Junot: in the menu: QuickTime Broadcaster > Preferences
[9:58] Josephine Junot: and choose the file path
[9:58] Josephine Junot: also check “Hint for Streaming Server”
[9:58] Josephine Junot: which optimizes it for streaming
[9:59] Josephine Junot: when it starts broadcasting, it’ll show “Broadcasting” with a little red dot
[9:59] Josephine Junot: the address of the stream will show below that
[9:59] Josephine Junot: in “rtsp” format
[9:59] Josephine Junot: for “real time streaming protocol”
[9:59] Josephine Junot: rtsp:// – in this example
[10:00] Josephine Junot: oops almost forgot: in “File:” you want to enter the filename – just the name of the stream, in this case “kcny”
[10:00] Josephine Junot: then in SL, under About Land > Media, set the stream URL
[10:01] Josephine Junot: you must have ownership or appropriate group rights in order to set this
[10:01] Josephine Junot: ownership of the parcel, I mean (or appropriate group rts)
[10:02] Josephine Junot: Troubleshooting: if you stop broadcasting, wait at least 10 seconds before starting to broadcast again. If you don’t, you may get an error. (It has something to do with the server needing a few seconds to reset the filename).
[10:02] Josephine Junot: Ok, that’s pretty much it for a basic overview
[10:02] Josephine Junot: and I know we’re out of time too
[10:02] Waxakla Voom: AWESOME!!!
[10:02] Waxakla Voom: thanks
[10:02] Glitteractica Cookie: You are ok, we started late
[10:03] Josephine Junot: yw!
[10:03] Niama Meyersohn: thanks so much for so much info!
[10:03] Glitteractica Cookie: do you have more content to share?
[10:03] Dansei Tigerpaw: outstanding….thank you Josephine
[10:03] Josephine Junot: I’m pretty much done
[10:03] Smash Lane: Awesome, ty
[10:03] Glitteractica Cookie: ok, any questions from the audience
[10:03] Farm Gartenberg: wonderful
[10:03] Josephine Junot: thanks, all!
[10:03] Ethelred Weatherwax: This was a great presentation
[10:03] Ethelred Weatherwax: Thank you
[10:03] Farm Gartenberg: I have had problems streaming from and viewing the stream at the same time on one computer with a dsl line. Moved the computer to a cable connection and both tasks worked – for a while. Using a mac mini.
[10:03] Glitteractica Cookie: and thanks again to Dr. G who offered very generously to post this info on the wiki!
[10:03] Josephine Junot: and again this is all on a wiki:
[10:04] Buffy Beale: Whew Jose had no idea it was so complicated and have a new appreciation for it
[10:04] Glitteractica Cookie: ok, then it’s easy for us to reference it
[10:04] Murray Haefnir: Do you know any free servers for Windows environment?
[10:04] Josephine Junot: oh one more thing: try to stream to a hooked up connection (rather than wifi) – it’s more stable
[10:04] Glitteractica Cookie: Dr. G, you can just link to that from our wiki
[10:04] Smash Lane: is it possible to simulcast in sl with a video stream?
[10:04] Josephine Junot: what do you mean by simulcast?
[10:05] Josephine Junot: like video out of SL and video into SL as well?
[10:05] Josephine Junot: (yes)
[10:05] Smash Lane: lets say i wanted to film this meeting, an show it on a screen somewhere else on the sim
[10:05] Josephine Junot: oh, yes
[10:05] Smash Lane: that i couldn’t figure out how to do
[10:05] Josephine Junot: then you do video output from your computer and into QT Broadcaster
[10:06] Waxakla Voom: bye everyone have to run
[10:06] Waxakla Voom: see you
[10:06] Josephine Junot: you might need an analog to digital converter (ADVC converter)
[10:06] Smash Lane: input the video into the stream?
[10:06] In Kenzo:
[10:07] Buffy Beale: Josephine would it be best to have an alt set up just to video or can you carry on as normal with filming?
[10:07] Farm Gartenberg: no direct screen capture?
[10:07] Josephine Junot: the way I’ve done it before is to use 2 computers, one running SL and grabbing the video out from it, and running the video into another computer running qt broadcaster, via an ADVC converter
[10:07] Smash Lane: thanks Josephine an InK
[10:07] Buffy Beale: k ty
[10:08] Glitteractica Cookie: any more questions
[10:08] Josephine Junot: yeah, the URL that In Kenzo just posted goes into detail:
[10:09] Glitteractica Cookie: any more?
[10:09] Farm Gartenberg: so there is not direct screen capture?
[10:09] Murray Haefnir: are there any sources for windows based servers?
[10:09] In Kenzo: that URL has direct screen capture options
[10:09] Farm Gartenberg: ty
[10:09] In Kenzo: I haven’t done it myself but have seen others do it this way
[10:09] Josephine Junot: not sure about windows based servers
[10:09] Murray Haefnir: thank you
[10:10] Murray Haefnir: that was very informative Josephine
[10:10] Murray Haefnir: thank you
[10:10] Josephine Junot: my pleasure! thanks, all!
[10:10] Buffy Beale: yes nicely presented Josephine thanks!
[10:10] Murray Haefnir: need to get back to the office
[10:10] Louise Later: Thank you so much! Great step by step.
[10:10] Glitteractica Cookie: OK, thanks to all of you for all your hard work
[10:10] Glitteractica Cookie: let’s keep the momentum going
[10:11] Glitteractica Cookie: natch, all notes will be posted to the wiki and Google group by saitek
[10:11] Glitteractica Cookie: our faithful volunteer
[10:11] Buffy Beale: yayy Saitek!
[10:11] Zed Canucci: yes…thanks….
[10:11] Glitteractica Cookie: and if you have any questions, please post them to our google group
[10:11] Buffy Beale: Can the screenshots be included?
[10:11] Glitteractica Cookie:
[10:11] Oronoque Westland: thanks Josephine and everyone else for sharing
[10:12] Glitteractica Cookie: i am just going to drop chat log on saitek
[10:12] Louise Later: including the screenshots would be so helpful
[10:12] Josephine Junot: the screenshots are on the wiki link also
[10:12] Glitteractica Cookie: Josephine would you email screen shots to Megan or post them somewhere
[10:12] Louise Later: great
[10:12] Glitteractica Cookie: ok, perfect
[10:12] Glitteractica Cookie: perfect
[10:12] Buffy Beale: purrrrfect
[10:13] Glitteractica Cookie: πŸ™‚
[10:13] Glitteractica Cookie: OK, see you all next time!
[10:13] Louise Later: gtg. Take care, all!

Written by: Beth J. Bates

Good Samaritan Group Gathering

I would like to invite you to this fun event during 1st week of May, 2007. Featured events of educational classes, product demo, book reading, video stream/footage of the US legendary rock bank Journey will happen on May, 5th and May 6th.

With over 40 of the most dedicated exhibitors ranging from businesses to nonprofit groups, RL musicians and artists to educational groups, this is a great opportunity to network and to see what you haven been missing in SL in a friendly and professionally designed building of Joysco Convention Center. Located on region/sim name: Convention Center.

Meet and chat with each exhibitor. They will be on site at various time and will be very glad to see you. Unlike other trade shows, we are looking for interaction more than just static prim displays. This is a FREE event(open to public) determined to benefit all visitors, as well as all exhibitors.

Please IM Johnny Austin for any additional information about this community event.

Thank you,
Johnny Austin

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Written by: Johnny_Austin