Video Formats

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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