MP3 to OGG for Podcasts

Podcasters hit this specific conversion because downloads is where the MP3 came from — a remote guest, a field recording, a clip — and MP3 is lossy and built for playback, so editing, production, and some apps and engines want a different format. For a show you need OGG, so the MP3-to-OGG step is part of the edit, not an afterthought.

OGG is what you publish — Apple Podcasts, Spotify, and every RSS-based host expect it. The order matters more than the format: record and edit on a lossless file, and encode the OGG once, from the finished episode. Converting early means every later edit sits on top of lossy audio and your export adds another generation on top of that.

Podcast bitrates are lower than most people assume, deliberately. 128 kbps stereo is the widely used standard, and 64–96 kbps mono is entirely respectable for pure speech — it roughly halves the download for every listener, which adds up across a back catalogue and matters to anyone on limited mobile data. Reserve 192 kbps and above for shows where music genuinely carries the experience.

Mono is the decision most worth revisiting. If your episode is voices with no meaningful stereo image — which describes most interview and solo shows — mono at 96 kbps is perceptually equivalent to stereo at 192 and half the size. Publishing stereo by default is a habit, not a requirement. And archive the lossless edit: social clips, best-of segments, and fixes should always be cut from that, never from the published file.

Expect a similar file size; the reason to convert is playback and workflow, not disk. MP3 already discarded data; OGG will discard a little more. Pick 192–320 kbps and it won't be audible in normal listening.

The MP3 on your drive almost certainly started life in downloads, and MP3 is lossy and built for playback, so editing, production, and some apps and engines want a different format. OGG is the destination because it plays essentially everywhere — game assets and every ordinary phone, browser, and player. You won't save meaningful space — the two formats are within touching distance at 1.4–1.2 MB per minute. Both MP3 and OGG are lossy, so this pair stacks a second encode — at a generous bitrate it stays inaudible, but if a lossless original of the MP3 exists, encode the OGG from that instead.