Subtitle editor: depending on selected video no audio may be played

[snoesberger]

When I have a dual stream recording where only one of the streams has an audio track, and the stream without audio is selected in the subtitle preview player, no audio is heard. This can be confusing to the user as the waveform is still displayed.

I don't have a solution, but these might be some ideas to improve the behaviour (other ideas are welcome):

• The video with audio could be pre-selected in the preview player.
• If there is only one audio track, always play that audio track regardless of the selected video (but what if both/all videos have an audio track?)
• Show both/all videos in the subtitles section

[marcusm7]

Same here.
Editor:

• When the slides-track has no audio: no waveform-image, no audible audio

The editor should use the audio sum of both audio-streams or should allow to select the stream to listen to.

Opencast 17.1 – 5ef5d70 – built on 2025-02-18
Firefox 135