lavfi-complex overlay time condition and audio files

Important Information

Provide following Information:

• mpv version : Any (tested with 0.37)
• Platform and Version : Any

Reproduction steps

1. Do not use the latest mpv. Its ffmpeg contains a bug that prevents lavfi-complex from displaying pictures in other pictures. Either use:

• mpv 0.35 (0.36 has a bug that will cause this to crash)
• mpv 0.37 built before December 3rd 2023 (for windows builds, use the 20231203 version for example)
• mpv 0.37 built with ffmpeg 6.1 (latest release), NOT ffmpeg master.
  See https://trac.ffmpeg.org/ticket/10795 for details on this particular scale2ref bug

2. Have a mp3 file with a cover and an avatar file. You can use the sample files linked below.
3. Launch mpv with mpv song.mp3 --lavfi-complex="movie='avatar.jpg',format=yuva420p,geq=lum='p(X,Y)':a='if(gt(abs(W/2-X),W/2-235)*gt(abs(H/2-Y),H/2-235),if(lte(hypot(235-(W/2-abs(W/2-X)),235-(H/2-abs(H/2-Y))),235),255,0),255)'[logo];[logo][vid1]scale2ref=w=(ih*.128):h=(ih*.128)[logo1][base];[base][logo1]overlay=x='if(between(t,0,8)+between(t,120,128),W-(W*29/300),NAN)':y=H-(H*29/200)[vo]

Expected behavior

The song will play and display its cover, and the circle avatar in the lower right should disappear after 8 seconds (if(between(t,0,8) in the lavfi complex line)

Actual behavior

Avatar doesn't disappear after 8 seconds

Note : this works on video files.

Log file

output.txt

Sample files

Avatar file : https://shelter.mahoro-net.org/~aterizak/mpv-bug/avatar.jpg
Song file : https://shelter.mahoro-net.org/~aterizak/mpv-bug/song.mp3

Start by reproducing the provided mpv command with the linked song and avatar files, comparing the audio-file behavior with the stated video-file behavior. Trace the lavfi-complex overlay time condition and confirm the avatar disappears after 8 seconds while the cover remains visible.