Speed change doesn't work for Prores encoding

[Selur]

Strange thing is according to the debug output:

ffmpeg -y  -r 25/1 -i "C:\Users\rapha\AppData\Local\Temp\Interview 2_Couper_new_1_2023-09-21@14_28_51_2810_06.mov" -i "C:\Users\rapha\AppData\Local\Temp\iId_2_aid_0_lang_en__2023-09-21@14_28_51_2810_04.aac" -metadata encoding_tool="Hybrid 2023.09.19.1" -c:0 copy -c:1 copy -map 0:0  -map 1:0  -aspect 1920:1080 -r 25/1 -f mov "C:\Users\rapha\OneDrive\Bureau\Interview 2_Couper_new.mov"

is used, so the output fps should be 25.
=> will have to do some testing

Cu Selur