Names of timelapse

[quiqueGCK1]

Speaking of timelapse in moonraker, until recently when the printing was finished, the timelapse generated two files, one with an mp4 extension and the other a jpg, (video and the previous one of the last frame), the names of these were the same as the name of the gcode, now and I don't know why, it only saves the mp4 and the name is a unique number without any apparent logic, do I have to configure something somewhere?
Thank you so much