When setting a video to 5.00 speed, then going onwards frame-by-frame; audio plays at 5x

mpv Information

mpv v0.41.0 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
 built on Aug 29 2026 22:13:18
libplacebo version: v7.360.1
FFmpeg version: n9.0.1
FFmpeg library versions:
   libavcodec      63.1.101
   libavdevice     63.1.101
   libavfilter     12.1.101
   libavformat     63.1.101
   libavutil       61.1.101
   libswresample   7.1.101
   libswscale      10.1.101

Other Information

- Linux version:NAME="CachyOS Linux"
PRETTY_NAME="CachyOS"

- Kernel Version:Linux tuti-cachyos 7.2.2-1-cachyos #1 SMP PREEMPT_DYNAMIC Fri, 28 Aug 2026 17:20:10 +0000 x86_64 GNU/Linux

- GPU Model:0000:00:02.0 VGA compatible controller [0300]: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] [8086:9a49] (rev 01)

- Mesa/GPU Driver Version:driverInfo                                           = Mesa 26.2.1-arch3.1
        driverInfo                                           = 610.57.04

- Window Manager and Version:Wayland 1.26.0-1.1
- Source of mpv:cachyos-extra
- Latest known working version:1:0.41.0-6
- Issue started after the following happened:Tried to skim through a video at 5x speed, paused it, then went forwards frame-by-frame, noticed the audio being weird, went back to normal speed, then went forwards frame-by-frame in the same scene.

Reproduction Steps

1. Go frame-by-frame in a part of the video when a person is speaking.
2. Increase the video's speed to 5.
3. Go frame-by-frame in the same part of the video.

https://github.com/user-attachments/assets/3abdd9cb-caec-458e-bdd8-b2f293c5d13d

Expected Behavior

The speech from the video at 5x speed should remain exactly like it is at normal speed; slow and easy to tell which syllable is being enunciated.

Actual Behavior

The audio plays very differently, it seems like it plays the frames of audio at 5x speed, which transforms the speech from the video into unintelligible and unpleasant noise.

Log File

output.txt

Sample Files

https://github.com/user-attachments/assets/68da1dde-fd3d-482a-9e1e-7c536e3f7162

I carefully read all instruction and confirm that I did the following:

• I tested and confirmed that the issue exists with the latest release version or newer.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

Start by reproducing the issue with the attached sample file, following the three listed steps, and inspect output.txt from the same run. Trace how frame-by-frame playback handles audio after the speed is set to 5.0. Done means speech remains slow and intelligible during frame stepping, matching normal-speed audio behavior.