FFMpeg: “Invalid audio stream. Exactly one MP3 audio stream is required“
IamtryingtoadaptthisFFmpegscriptthatencodesallvideofilesinadirectory,toinsteadconvertmp3filespresentinthatdirectorywithsimilarpreferences.Theoriginalscript:Thisworksfor.MOV->.MOVencoding.cd/Convert;fo