slow seeking when using heavy filters

[luikaire]

mpv Information

mpv 0.38.0-UNKNOWN Copyright © 2000-2024 mpv/MPlayer/mplayer2 projects
 built on Aug 20 2024 14:03:22
libplacebo version: v7.349.0
FFmpeg version: 7.0.git
FFmpeg library versions:
   libavcodec      61.11.100
   libavdevice     61.2.100
   libavfilter     10.2.102
   libavformat     61.5.101
   libavutil       59.34.100
   libswresample   5.2.100
   libswscale      8.2.100

Important Information

- Platform version:
- GPU model, driver and version:
- Source:
- Introduced in version: all

Reproduction Steps

Use a CPU/GPU compute heavy filter that runs in real-time under normal playback conditions. Example is a vapoursynth script that uses RIFE-gpu for frame interpolation
(styler00dollar/VapourSynth-RIFE-ncnn-Vulkan#29)
sample vapoursynth script is attached which uses styler00dollar/VapourSynth-RIFE-ncnn-Vulkan RIFE models
motioninterpolation_rife_sudo.vpy.txt

Expected Behavior

Normal seeking (without temporary "hanging")

Actual Behavior

When using heavy filters (like RIFE-vapoursynth for frame interpolation) mpv hangs for a few seconds before seeking . This behaviour is not seen when not using filters or using fast filters

Log File

output.txt

Sample Files

No response

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

• I tested with the latest mpv version to validate that the issue is not already fixed.
• 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.