Media Page

The Media page lets you specify an image file type for snapshot and image render types or a video format for the animation render type.

Format Specifies the file format for saving the rendered output.

Radiance HDR preserves 32-bit per channel RGB data, but the other formats do not.
Include Alpha Specifies support for alpha channel files such as .png, bmp, .tiff, and OpenEXR.

Transparency information is written into the Alpha channel of the image file. Alternatively, you can render an Alpha Render Layer into a separate file. See Quality Page.

Does not apply to Snapshot renders.
Keep Source Images Produces a collection of still images that represent frames from the animation timeline.

One image for every frame of the animation timeline is saved alongside the video.

Does not apply to snapshot and image renders.