Auxiliary Stream Wrangling in playbin3

Settings

Always show controls

Qualities

UbiCast player

Keyboard shortcuts

Action

Key

Play / Pause

K or space

Mute / Unmute

Toggle fullscreen mode

Select next subtitles

Select next audio track

Toggle automatic slides maximization

Seek 5s backward

left arrow

Seek 5s forward

right arrow

Seek 10s backward

shift + left arrow or J

Seek 10s forward

shift + right arrow or L

Seek 60s backward

control + left arrow

Seek 60s forward

control + right arrow

Seek 1 frame backward

alt + left arrow

Seek 1 frame forward

alt + right arrow

Decrease volume

shift + down arrow

Increase volume

shift + up arrow

Decrease playback rate

Increase playback rate

Seek to end

end

Seek to beginning

beginning

Loading Click here to add:

Subscribe to notifications

When subscribed to notifications, an email will be sent to you for all added annotations.

Your user account has no email address.

Information on this media

9 views

GStreamer’s playbin3 element provides a convenient and simple interface for basic media playback. Like earlier playbin elements, it has some support for external subtitles, but with some limitations. Extending it to handle multiple auxiliary streams - such as multiple audio or subtitle tracks - reveals a surprising number of complexities. This talk delves into the challenges faced when adding robust auxiliary stream support to playbin3, covering bugs found, pipeline negotiation intricacies, state management issues, and the corner cases that arose.

Creation date: Oct. 24, 2025

Speakers: Jan Schmidt

License: CC BY-SA 3.0

Links:

Latest annotations RSS feed

Information on this media

Other media in the channel "GStreamer Conference 2025"