Omny Studio supports these formats for uploading media for podcast episodes.
Also see:
Audio
MP3, AAC/M4A, WAV, and uncompressed AIFF.
Maximum size: 1000 MB.
Video
MP4 with H.264 or H.265 video.
AAC audio.
Maximum upload size: 12 GB.
Omny re-encodes the video to 720p at 2.5Mbps.
Maximum size once re-encoded: 4 GB.
Omny keeps only the video track and first audio track in the MP4 container.
Omny removes chapter metadata or subtitle tracks.
To give your audience a good experience for watching video clips, Omny Studio recommends:
Video: Aspect ratio of 16:9, at least 720 vertical pixels.
Audio: Stereo, at least 128 kbps.
Omny shows a warning when a video clip does not follow this recommended format.
Example:
Artwork
Artwork is a graphics image that you can add to clips, playlists, and programs. Podcast platforms use this artwork in their directories and players. For details, see Artwork.
You can include text in artwork, like a program’s name. But avoid adding other text like marketing copy or promotional content. This might interfere with the text and graphical elements in a podcast platform’s user interface.
Artwork file size
There is no file size limit to artwork. But keep in mind that artwork can affect your bandwidth costs.
Artwork for all Clips, Playlists, and Programs
This is the conventional 1:1 format supported by all podcast platforms. You can add artwork in this format to all audio and video podcasts:
Aspect ratio: 1:1 (square)
File format: JPEG or PNG
Minimum resolution: 3000 x 3000 pixels
16:9 Artwork for Video
Some podcast platforms that play video also support 16:9 artwork. As well as 1:1 artwork, you can add 16:9 artwork to video clips, and to playlists and programs that contain video clips.
Aspect ratio: 16:9
Minimum resolution: 1920 × 1080 pixels
File format: PNG (preferred) or JPEG