ffmpeg concat videos with different timebase

Question

I use

ffmpeg.exe -f concat -i file_path_list_txt -c copy out_out.mp4

to concat

for file in 1265_*; do ffmpeg -i $file -cr         


        

Answer 1

When compressing to MOV/MP4, set a common timescale tbn using -video_track_timescale N. For your input, N=600 looks fine.