It looks like you’re asking for a related to an episode of The Bay — specifically Season 5, Episode 3 , with an AC3 audio reference.
ffmpeg -i input.mkv -map 0:a:0 -c:a ac3 -b:a 384k -ac 6 -ar 48000 output.ac3
| Parameter | Setting | |-----------|---------| | Codec | AC3 (Dolby Digital) | | Channels | 2.0 (stereo) or 5.1 if source is multichannel | | Bitrate | 192 kbps (stereo) / 384–448 kbps (5.1) | | Sample rate | 48 kHz | | Dialog normalization | -31 dB (or off) | | Bitstream mode | Complete main |
ffmpeg -i input.mkv -map 0:a:0 -c:a ac3 -b:a 192k -ar 48000 output.ac3