Variable Speed Playback in the EchoPlayer

Owned by Hannah Petty
Last updated: Aug 11, 2015Version comment
1 min read

Overview

Variable speed playback (VSP) allows a viewer to slow down or speed up the rate at which an Echo plays. Viewers can slow playback down to half-speed (0.5) or speed it up to twice the normal rate (2.0) by adjusting the slider control, as shown below.

vsp control

Limitations

VSP is available only with certain browsers and with certain capture options.

  • VSP is supported by newer browsers that adhere to the HTML5 standard. See Browsers.
  • VSP is supported only for Audio/Display (A/D) and Audio/Display/Display (A/D/D) inputs. Video input is not supported.
  • When a viewer varies the playback, both the audio and the display (or both displays) speed up or slow down. If the Echo includes a video input, the video pane turns black when playback speed varies from the normal speed, as shown below. The video re-appears and resynchronizes when the playback speed returns to normal.

    video pane is black