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Yes. You can play prerecorded podcast episodes in different formats in one YouTube livestream if your playback software can decode each file and your encoder sends YouTube a supported outgoing audio format. The episode files’ formats and the livestream’s outgoing format are separate parts of the workflow.
How different episode formats work in one livestream
A media source or playlist in streaming software plays each episode, then routes its audio into the stream mix. The encoder sends that mix to YouTube using the settings for the chosen ingest protocol. As a result, episodes do not all need to start in the same file format—but the playback software must be able to read each one.
OBS documents MP3, AAC, OGG, and WAV as supported audio media-source types, and supports media-source playlists. That covers many common episode files, but does not guarantee that every file or codec profile will decode. YouTube also transcodes incoming live streams into viewer-facing formats; it does not simply pass through each episode’s original file unchanged. OBS Media Sources · YouTube encoder settings
Choose the outgoing audio format for YouTube
For the documented RTMP/RTMPS workflow, YouTube lists AAC or MP3 as supported audio codecs. For standard stereo, YouTube recommends a 44.1 kHz sample rate and a 128 Kbps audio bitrate. These are outgoing stream settings; they do not require every source episode to use those same settings.
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| YouTube ingest route | Audio codecs listed by YouTube | Practical note |
|---|---|---|
| RTMP/RTMPS | AAC or MP3 | YouTube’s stereo recommendations are 44.1 kHz and 128 Kbps. |
| HLS | AAC, AC3, or EAC3 | YouTube says HLS has higher latency than RTMP because it sends video segments. |
Codec support depends on the ingest route. Use settings supported by the protocol you choose, and check YouTube’s stream health before broadcasting. YouTube HLS setup
Set up a mixed-format episode playlist in OBS
- Add the episode files: In OBS, create or select the scene for the livestream. Add each episode as a Media Source, or use the media-source playlist workflow documented by OBS. Select the files you want to play.
- Check playback: Start each source and confirm it plays. Verify that its audio is routed to the stream mix; a file can play locally while its sound is absent from the broadcast mix.
- Configure outgoing audio: Set the encoder’s audio codec to a format supported by your YouTube ingest route. For RTMP/RTMPS, YouTube lists AAC or MP3 and recommends 44.1 kHz and 128 Kbps for stereo.
- Test the full sequence: Run a private or unlisted test that includes episode changes and transitions. YouTube recommends testing with audio and movement similar to the planned stream and monitoring stream health.
- Check the live result: Confirm the audio is audible and that YouTube reports a healthy incoming stream before relying on the setup for a scheduled broadcast.
For an unusual file, test it in the exact software and configuration you plan to use. The documented source formats and ingest codecs do not certify every possible encoding or every third-party encoder’s conversion behavior. OBS Media Sources · YouTube encoder settings
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Keep RSS podcast publishing separate from livestreaming
YouTube’s podcast RSS feature is a different distribution workflow, not a continuous livestream. YouTube describes a podcast as a playlist of videos. With RSS ingestion, YouTube creates separate videos for selected feed episodes, typically pairing the audio with the show’s art as a static image; new feed episodes can upload automatically. RSS ingestion is available only in selected countries or regions.
If an RSS-ingested episode needs an audio correction after publication, YouTube’s guidance says to upload a new file from the RSS feed. That creates a new video and makes the old one private. This correction process is distinct from choosing codecs for a live encoder. Deliver podcasts using an RSS feed · Distribute podcasts on YouTube
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