[HELP] Upscaling VCD .dat files problem

[Miranda]

I added two .DAT files to Hybrid, both sides of a VCD (MPEG-1). 

Hybrid correctly reported these as 25fps progressive. However, when denoising and upscaling to 720, the footage is being slowed down resulting in twice the running time, but to confuse matters the running time of the exported files still shows as 25fps. Any suggestions what could be happening?

[Selur]

Without a debug output: No.
Additionally, when handling vcds best repack the content with https://www.videohelp.com/software/vcdgear (Windows only).

Cu Selur