A target average bitrate of ~200kbps should be perfectly transparent for that kind of material. Otherwise : 320kbps might be a waste of space, encoding with a variable bitrate (using a preset) makes more sense, especially for lectures which have a lot of silence (as opposed to music content). What is the meaning of "%%~a" here ? Shouldn't it be just "%%a" ? (Or "%a" from an interactive command line call.) I set up a "watched folder" to demonstrate, but it mainly contained images and video files without audio.įor %%a in (*.mp4) do ffmpeg -i "%%~a" -b:a 320k "output\%%~na.mp3" Ignore the processing errors in the screenshot. There's instructions here for downloading the additional files required for the "watched folder" functionality. When it's configured, it'll automatically convert anything in the "watched folders" without having to load the files into the GUI. report -i "" -y -threads 1 -vn -c:a libmp3lame -b:a 320k -compression_level 2 ".mp3"ĪnotherGUI has a "watched folders" option. ![]() If you have problems add -report to the command line so ffmpeg will write a log file. compression_level 1 (or 0 is maximum quality) will be very slow and probably not worth it. ![]() compression_level 2 is slower but still fast enough. "-compression_level" equates to LAME's -q option for CBR encoding. ![]() i "" -y -threads 1 -vn -c:a libmp3lame -b:a 320k -compression_level 2 ".mp3" I just copy ffmpeg.exe to the AnotherGUI folder.Ī preset for converting to MP3 at the maximum bitrate might look something like this. For converting with ffmpeg, try AnotherGUI.
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