Video playback very laggy and no sound

Bug Reports
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#1

REPRODUCIBILITY (% or how often): always
BUILD ID = OS VERSION (Settings > About product): 4.3.0.12
HARDWARE (XA2, X10, X10 II, …): X10 II
UI LANGUAGE: German
REGRESSION: (compared to previous public release: Yes, No, ?): Yes (but I noticed this behaviour in 4.2 as well before updating to 4.3, however everything worked ok in earlier versions)

DESCRIPTION:

Video playback is very slow / laggy and has no sound. This affects videos in the Gallery app, but also e.g. videos on Youtube (native browser as well as Opera Android app).

PRECONDITIONS:

STEPS TO REPRODUCE:

  1. record a video with camera app
  2. try to watch the video in gallery

EXPECTED RESULT:

the video plays in realtime

ACTUAL RESULT:

very slow playback without sound

ADDITIONAL INFORMATION:

I tried this solution

(store was listed as user added repository, so I removed it) but it didn’t help

#2

I recently noticed the following: When headphones are connected videos play smoothly and with sound.
What could be the reason for this behaviour? I seem to be the only one with this issue, so is there some way I can check my device for errors?

#3

Same problem here. Sony Xperia 10 III with 4.6.0.13.
@nzm were you able to solve this issue? I did not tried headphones jet.

#4

My Problem was related to https://forum.sailfishos.org/t/xperia-10-iii-audio-and-video-problems-trigger-after-a-period-of-time-in-use/
systemctl --user restart pulseaudio solves the issue temporary.