Get a sample as an image file. This only applies to samples with RGBA data.
Project ID
Sample ID
Whether to process the image through the input block first
If set, then a long cache header is sent. If this is omitted then a no-cache header is sent. You can use this if you f.e. know the last modified date of a sample. Stick the last modified date in the cache key, so the sample can be stored in browser cache (and will automatically be invalidated if the modified date changes).
Impulse ID. If this is unset then the default impulse is used.
Image file (either JPEG or PNG format)