Convert any audio or video file to MP3.
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mp3 wav aac flac ogg m4a mp4 mkv avi mov webm …
Removes long silences and saves a shorter copy (_rd).
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mp3 ogg m4a amr
Keeps only the parts of the audio where the human voice is detected (FFT analysis).
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mp3 wav m4a flac ogg aac …
Tip: lower “Min volume” to capture softer voices. Raise “Min vocal ratio” to cut more instruments / background noise.
Splits a long audio/video file into MP3 parts of a chosen length.
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mp3 wav aac flac ogg m4a mp4 mkv …
Joins several audio files, in the order shown, into one file.
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mp3 wav aac flac ogg m4a opus wma aiff amr
Joins .txt files, or .srt files with automatic time offsets. For SRT, also add the matching audio files (same name) — their duration sets the offset.
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txt · srt · (mp3 …)
Extracts the audio track of many videos at once into MP3 files.
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mp4 mkv avi mov webm flv wmv m4v ts 3gp