Very long flex durations cause issues when nearing the end

[vexorian]

I had a channel with a single flex program of duration 60000000 . That had the start a year ago.

After so much time has passed since that date, today it started to fail, apparently generating negative durations.

dizquetv           | Input #0, png_pipe, from 'http://localhost:8000/images/generic-error-screen.png':
dizquetv           |   Duration: N/A, bitrate: N/A
dizquetv           |     Stream #0:0: Video: png, rgba(pc), 1920x1080 [SAR 3780:3780 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
dizquetv           | [sine @ 0x55e6f82f0f40] Value -1029225.311000 for parameter 'duration' out of range [0 - 9.22337e+12]
dizquetv           |     Last message repeated 1 times
dizquetv           | [sine @ 0x55e6f82f0f40] Error setting option duration to value -1029225311ms.
dizquetv           | [Parsed_sine_5 @ 0x55e6f82f0e00] Error applying options to the filter.