Ramp Doesn't Play MPEG Example File

[joncameron]

Description

In the IIIF Cookbook recipe for choice in AV manifests, one of the choices is not playing back in Ramp as it is expected to. Instead, it returns the Media could not be loaded. Network error or media format is not supported. error. This file should be expected to play in Ramp if the quality selector is used to switch the choice/quality level to "mpeg".

IIIF Cookbook recipe: https://preview.iiif.io/cookbook/0434-choice-av/recipe/0434-choice-av/
Cookbook Manifest in Ramp: https://ramp.avalonmediasystem.org/?iiif-content=https://preview.iiif.io/cookbook/0434-choice-av/recipe/0434-choice-av/manifest.json

See #434 for previous work on updating the error messaging and fixing an error with choice selection.

Done Looks Like

• mpeg file in derivatives list within example manifest is able to play back

[joncameron]

Video.js may not be supporting this mpeg2 stream out of the box and it's most likely related to Video.js media handling. Mirador plays it but other media players also do not, such as Clover.

Changing the mime type in the manifest may be why this isn't loading and playing as expected. audio/mpeg or another mimetype may be what needs to supply.
Also: is the cookbook recipe correct in terms of mime type?