Quicktime

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3D Space via Quicktime for Web Observers

This page is accessible at the short URL http://tr.im/3dspacealt
Recorded version for demonstration

For OpenVCE.net Web Observers, you can launch two other tools in separate windows - to let you move them on screen as you wish:

Notes:

  • All-in-One: The "All-in-One" link may also be used to launch all three tools by those without the Adobe Connect launcher plug-in installed. Unfortunately, Adobe Connect otherwise will take over the whole window rather than staying within its allocated frame.
  • Video/Audio via Apple Quicktime: Video and audio is relayed via Quicktime Steaming using the Real Time Streaming protocol (http:// or rtsp:// on port 554) which may be blocked by some firewalls.
  • I-Say: You may use the chat facilility to communicate between others using this chat facility and those within a nominated OpenVCE 3D Space. When you chat you will be asked for a name. That name will be used to identify your messages. Type return after a message to send a chat message. Make sure you send at least one even very simple "Hi" message, since you will not see any chat from others until you do. There can be a 20 seconds or more delay on first use.
  • Twitter: the hash-tag normally used for OpenVCE events is #openvce

Austin Tate's picture

3D Space via Quicktime for Web Observers - Recorded Demo

Recorded Demonstration

VW PlatformLocationURLLauncher
Second Life

OpenVCE 3D Space - Round table for up to 25 people

http://slurl.com/secondlife/Informatics/209/196/23/

teleport

Meeting Video

Click play/pause button to start and stop the video stream


Meeting Chat

You may use this chat facilility to communicate between those within the OpenVCE 3D Space and others using this chat facility.

When you press "Login" or type your first message in the input line at the bottom, you'll be asked for a name. That name will be used to identify your messages. Type return to send a chat message. Make sure you send at least one even very simple "Hi" message, since you will not see any chat from others until you do. There can be a 10 seconds or more delay on first use.

Austin Tate's picture

Video Formats

Video Streaming Formats - Real Time

Anything that can play within a Quicktime player should work within Second Life and Opensim. A typical URL for the "Media URL" on a plot in Second Life and Opensim would look like this:

We have successfully used the following encoding specs in Wirecast for live broadcasts for example:

  • Video: encoded Quicktime H.264 Full Colour 640x480 medium quality 10 frames per second keyframe every 45 frames, limit data rate to 220kbps.
  • Audio: MPEG-4 44.10 stereo AAC low complexity 64kbits.sec sample rate: 32000bps (for some reason 44,100 is greyed out) Quality Best.

Video Formats - Saved and Steamed

    • HD1080 (1920x1080) 16:9
    • HD720 (1280x720) 16:9

  • PSP (480x272) 16:9
  • SD (768x576) 4:3 (Preserve Ratio via Crop)
  • Hi (640x480, VGA) 4:3 (Preserve Ratio via Crop)
  • Lo (320x240, QVGA) 4:3 (Preserve Ratio via Crop)

Quicktime Video

  • Compression: H.264
  • Quality: High (not Best)
  • Frame rate: 15
  • Key Frame rate: use 24
  • Frame Re-ordering: Yes
  • Encoding Mode: Multi-pass
  • Dimensions: (set to one needed - see above)
  • Data rate: Automatic used (hence will alter for each size)
  • Hinted for Streaming

Quicktime Audio

  • Encoding: MPEG-4
  • Audio Format: AAC (Low Complexity)
  • Sample rate: 44.1kHz
  • Quality: Better
  • Channels : Mono (21 Channel)
  • Bit rate limit: 64 Kbps

WMV Video - Cannot be used in Second Life - Use on Web Only

    • Profile: Camtasia Studio Best Quality and File Size (recommended)
    • Default Profile: This profile is ideal for delivery from a web server. The settings will maintain quality while only using as much file size as necessary. These settings are compatible with Microsoft Silverlight.
    • Audio encoding mode: CBR
    • Video encoding mode: Quality VBR
    • Audio codec: Windows Media Audio 9.1
    • Audio format: 48 kbps, 44 kHz, mono
    • Video codec: Windows Media Video 9
    • Video bit rate: Quality based

 

Austin Tate's picture

3D Space via Quicktime for Web Observers - All-in-One

VW PlatformLocationURLLauncher
Second Life

OpenVCE 3D Space- I-Zone - Round table for up to 25 people

http://slurl.com/secondlife/VCE/128/80/22/

teleport

Meeting Video

Click play/pause button to start and stop the video stream

URL for RTSP: rtsp://media.aiai.ed.ac.uk:554/vue.sdp
URL for HTTP: http://media.aiai.ed.ac.uk:554/vue.sdp
(Opens in a separate player)


Meeting Chat (I-Say to VCE I-Zone)

You may use this chat facilility to communicate between those within the OpenVCE 3D Space and others using this chat facility.

When you press "Register" or "Login" or type your first message in the input line at the bottom, you'll be asked for a name. That name will be used to identify your messages. Type return after a message to send a chat message. Make sure you send at least one even very simple "Hi" message, since you will not see any chat from others until you do. There can be a 10 to 20 seconds or more delay on first use.

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