Blubrry Statistics Requirements

In order to obtain the most accurate statistics for your podcast, the requirements listed on this page should be followed.

No pre-loading in players

Preloading refers to the functionality where a player will automatically start loading the media upon page load. To ensure compliance, set preload=”none” within your audio or video tag. This will ensure faster page loading and rendering, as well as avoid any unnecessary bandwidth usage.

Note: Podcasters who use the built-in tools found in PowerPress already meet this requirement.

No auto-playing

Autoplay refers to a property for web-based players to automatically start playing upon page load. This occurs when the attribute autoPlay=true is included in the embed/object. In HTML5 players, this happens when autoplay or autoplay=”autoplay” is included within the audio or video tag.
In order to meet the requirements, do NOT include any variation of the autoplay property to your player. This will ensure more accurate podcast statistics and a more user-friendly experience for your listeners.

Note: Podcasters who use the built-in tools found in PowerPress already meet this requirement.

Use of ID3v2 Tags

ID3 tags are data stored within an MP3 file and contains information such as the title, artist, year, genre and square image artwork for the podcast episode. Version 2 of the ID3 tag standard includes features required for podcasting including the ability to add artwork (images) within the tags as well as placing the tags at the start of the MP3 file. By storing the ID3 tags at the beginning of the file podcast players can promptly download the very first portion of your episode and display your show’s information as it retrieves the first minutes of your episode for playback. ID3v1 tags require the entire episode to be downloaded before the tags can be read.

If you are able to store an image in your MP3, you are already using ID3v2 tags and are compliant.

1 Minute within first 2 MB

In order to accurately count podcast episode plays, at least 1 minute of audio must be downloaded to be recognized as “consumable”. To meet this guideline, the first minute of audio must be downloaded within the first 2MB of the audio file. This can be achieved by adhering to the following:

  • MP3 bit rate must be 192Kbps or lower (128Kbps stereo or 96Kbps mono recommended)
  • ID3 artwork (image saved to your ID3 tags) must be at most 300 kB (0.3MB)