codecalpha: Fix racy failure of validate.file.playback.scrub_forward_seeking.opus_vp9-alpha_webm
requested to merge ndufresne/gst-plugins-bad:fix-validate.file.playback.scrub_forward_seeking.opus_vp9-alpha_webm into master
As notice by @ocrete and @thiblahute already, the codecalpha work introduced some racy failure in the CI, at least with:
validate.file.playback.scrub_forward_seeking.opus_vp9-alpha_webm
The core of the problem was that stream-start events were duplicated (along with many other events), instead of being aggregated. This MR also includes removal of hacks that were only needed to multiqueue issues. This seems to fix hangs with playbin2 when doing gapless too.