Choose the output format and quality

• MP3 at 320 kbps for finished music. 192 kbps is enough for speech.
• M4A is AAC. It is a good choice for Apple devices.
• WAV here is a 24-bit PCM encode, unless a lossless copy keeps the original PCM stream.
• FLAC is lossless. OGG is Vorbis. Opus prefers 48 kHz.
• Bitrate buttons are off for WAV and FLAC.

Changing bitrate, sample rate, or channel count means the audio is encoded again.