Can't navigate past 2^31 milliseconds in long (over 600 hour) videos

[Hato1]

Describe the bug
In long videos, skipping to a point past ~595 hours using the navigation bar instead plays the video from beginning
595 hours

To Reproduce
Steps to reproduce the behavior:

1. Open video with duration over 600 hours
2. Click on the navbar to get to a point past 595 hours
3. Observe that while the navbar appears to have correctly updated, the video is playing from the start (The current timestamp is correctly shown)

Expected behavior
Playback continues from the timestamp clicked in the navbar

Screenshots
If applicable, add screenshots to help explain your problem.

Your Enviroment

• SMPlayer version: 23.12.0
• OS: Linux Mint 20.3
• Multimedia engine you're using with SMPlayer (preferences -> general):
  [ ] MPlayer
  [X] MPV

Logs
Reproduce the bug in your computer and attach the smplayer log (menu View) here.

[16:25:57:306] BaseGui::checkStayOnTop
[16:25:57:535] Core::goToPosition: value: 816
[16:25:57:535] Core::goToSec: -1646299.000000
[16:25:57:535] MPVProcess::sendCommand: "seek 0 absolute keyframes"
[16:25:57:569] MPVProcess::parseLine: idle
[16:25:57:569] BaseGui::displayState: "Unknown"
[16:25:57:570] DefaultGui::togglePlayAction
[16:25:57:570] BaseGui::togglePlayAction
[16:25:57:570] StateWidget::watchState: 3
[16:25:57:571] BaseGui::checkStayOnTop
[16:25:57:613] BaseGui::displayState: "Playing"
[16:25:57:613] DefaultGui::togglePlayAction
[16:25:57:613] BaseGui::togglePlayAction
[16:25:57:614] StateWidget::watchState: 1
[16:25:57:614] Core::changeCurrentSec: mplayer reports that now it's playing
[16:25:57:614] BaseGui::checkStayOnTop
[16:25:57:851] Core::goToPosition: value: 779
[16:25:57:851] Core::goToSec: -1766397.000000
[16:25:57:851] MPVProcess::sendCommand: "seek 0 absolute keyframes"
[16:25:57:903] MPVProcess::parseLine: idle
[16:25:57:903] BaseGui::displayState: "Unknown"
[16:25:57:903] DefaultGui::togglePlayAction
[16:25:57:904] BaseGui::togglePlayAction
[16:25:57:904] StateWidget::watchState: 3
[16:25:57:905] BaseGui::checkStayOnTop
[16:25:57:948] BaseGui::displayState: "Playing"
[16:25:57:948] DefaultGui::togglePlayAction
[16:25:57:948] BaseGui::togglePlayAction
[16:25:57:948] StateWidget::watchState: 1
[16:25:57:948] Core::changeCurrentSec: mplayer reports that now it's playing

Additional context
I recorded a timestamp close to when the issue starts occuring and converted it to milliseconds (2131200000). Log base 2 of that is 30.99, suspiciously close to the maximum value of a signed int32.

[smplayer-dev]

Very difficult to test this.
Do you have a 600 hour sample video?

[Hato1]

Afraid I cannot share any real test cases, those videos are all over a TB anyway. I used this ffmpeg command which took almost an hour to generate a blank video:
ffmpeg -t 2520000 -f lavfi -i color=c=black:s=32x32 -c:v libx264 -r 1 -tune stillimage -pix_fmt yuv420p output.mp4
The video is 700 hours long at 1 fps and only 70MB. Trying to skip between the 600-700 hour range will cause the issue.
Video download: https://easyupload.io/79f4j8
Screen recording of me recreating the issue:
cinnamon-20240621-1.webm