Articles on: Ads & Monetization

How do I set up dynamic ads with Campaigns?

Campaigns is Transistor's dynamic ads feature, also called dynamic audio insertion (DAI). It inserts your own ads, announcements or other audio clips at the beginning, middle or end of your episodes, in new episodes and, if you like, your back catalog too. You can change or remove them at any time without re-editing your episodes.


Campaigns are included on Professional plans and above.



Everything lives in your podcast's Campaigns tab, which has four sections: Campaigns, Schedules, Ads and Analytics.


1. Upload your ads


The Ads section is your library of audio clips: sponsor ads, promos, announcements or anything else you'd like to insert.


  • Go to Campaigns › Ads and click New Ad
  • Give it an Ad Title and, if you like, an Ad Description to help you find it later
  • Upload the Audio File
  • Optionally, choose its Placement: Pre-roll, Mid-roll or Post-roll


2. Build a campaign


A campaign is the set of ads that go into an episode, in order.


  • Go to Campaigns › Campaigns and click New Campaign
  • Give it a Campaign Name
  • Choose the ads you want under Pre-Roll Audio, Mid-Roll Audio and Post-Roll Audio. You can have more than one in each, and they play in the order they're listed.
  • Optionally, add Beginning Show Notes and Ending Show Notes to promote your sponsor in your show notes too. See What are Dynamic Show Notes?
  • Save your changes


Once it's saved, the campaign shows an Episode Audio Preview: one of your episodes with the campaign's ads in place, so you can hear how it sounds.


Only want to add text to your show notes? You can create a campaign without any audio.


3. Choose which episodes get the campaign


  • All episodes: on the Campaigns page, set it as your Default Campaign. It applies to every episode that isn't assigned a different campaign, including new episodes as you publish them.
  • One episode: in the episode's settings, choose a campaign under Assign a Campaign. Choose None to keep an episode free of campaign audio.


Changing your default campaign updates the audio of every episode using it straight away.


For campaigns that start and end on set dates, or run on a selection of episodes, turn on scheduling.


See How do I schedule campaigns?


4. Add mid-roll locations to your episodes


Pre-rolls and post-rolls go at the start and end of an episode automatically. For mid-rolls, you choose where they go in each episode:


  • Open the episode and go to its Ad Locations tab
  • Play or seek through the audio to find a natural break, like a pause between topics
  • Click New Ad Location to add a mid-roll location at that point, then save it


You can add as many locations as you like. A campaign fills them in order with its mid-roll ads and skips any it has no ads for. If an episode has no ad locations, its mid-roll ads are skipped.


5. See how your ads are doing


Campaigns › Analytics shows impressions for each campaign and each ad over the time period you choose. On Enterprise plans, you can also send impressions to third-party ad tracking services.


See How do I track my ads with third-party tracking pixels?


Good to know


  • Trailers never get campaign audio.
  • Chapters embedded in your audio file are kept, and their timestamps move to match the new audio.
  • YouTube: episodes published to YouTube use your original audio, without campaign ads.


For answers to common questions, see How do Campaigns work?


If you have additional questions please reach out to us:


Updated on: 02/11/2026

Was this article helpful?

Share your feedback

Cancel

Thank you!