ffmpeg override output file if exists

use option -y with your command

ffmpeg -y 
-i /audio/your_file_name.flac 
-t 51 
-ss 69 
/clips/your_clip_name.mp3 2>&1 >> /ffmpegLogs.log

I need to add the -y global switch before specifying the output file to accomplish this

ffmpeg -i /audio/191079007530_1_01.flac -t 51 -ss 69 -y /clips/44z274v23303t264y2z2s2s2746454t234_clip.mp3 2>&1 >> /ffmpegLogs.log

Alternatively, you can use the -n option to deny overriding the file.

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