Proposed

4.9.6 Playback Rate Adjustment for Multimedia Content. The user can adjust playback rate of prerecorded content containing speech audio tracks such that all of the following are true (Level A):

- The playback rate should be user adjustable between 1/3 and 3 times real time of the recorded content.

- Recorded speech, whose playback rate has been adjusted by the user, should utilize pitch maintenance in order to avoid degradation of the speech quality.

If only a visual track is present, provide at least one setting between 40% and 60% of the original speed. (Level A)

When audio and video tracks are expected to be synchronized, synchronization is maintained as long as they are played at 75% of the original speed or higher. (Level A)

The UA should provide a function that resets the playback rate to normal (1x). (Level A)

Summary

Details