Seeking with playback rates != 1.0x seeks inappropriate amounts of real time

[MariusAlbrecht]

Describe the bug
Seeking moves 15 seconds in the player. The actual time passed in the recording however depends on the playback rate. This leads to people watching on rates != 1 (especially those higher) to seek forward/backwards inappropriate amounts of real time. For me, e.g., the default seek behavior moves far more than half of a minute (with playback rates >= 2.4) of real time which is pretty useless most times.

To Reproduce
Steps to reproduce the behavior:

1. play a stream

Expected behavior
always seek (roughly) the same real time and thus seek only seek_time / playback_rate seconds in the player.
I feel like this issue can not be fixed with just #1171 #1234 because that'd require a permanent playback rate

[YiranDuan721]

Hi! Thanks for the issue. I'm not sure, by "real time", do you mean the duration of the video, or the time in the real world (so for a 1-minute-long video with 2x playback rate, the real time would be 30 seconds)?
If it's the former one (duration of the video), I didn't manage to reproduce the problem;
For the latter one, I personally think that the current seek behaviour is more natural