[REPOST TO trac.ffmpeg.org] Speeding up video doesn't affect duration

[sdfdger]

Posting here because https://github.com/FFmpeg/FFmpeg disabled the Issue tab

setpts speeds up the video, but the duration stays the same. The rest of the video is the last frame.

Version:
https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-win64-gpl.zip
from "Latest Auto-Build (2024-04-30 12:51)" 1a3e916

ffmpeg -i "sampletext.mp4" -filter:v "setpts=PTS/10" "10x sampletext.mp4"

sampletext.mp4
10x sampletext.mp4

[BtbN]

Please direct user questions at the appropriate channels(#ffmpeg IRC or ffmpeg-user ML).
These issues are for issues regarding these builds specifically.

[sdfdger]

Someone should repost this to https://trac.ffmpeg.org

[BtbN]

trac is not a support channel either, and this does not look like any kind of bug to me.