added mime checks, minor logic improvements in recording

[hrajwade96]

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[elliette]

Hello! I'm going to close this PR since it has stayed open as a draft for three months. If this is a change you would like, please re-open as a non-draft with a PR description and issue link. Thank you!

[hrajwade96]

Hello! I'm going to close this PR since it has stayed open as a draft for three months. If this is a change you would like, please re-open as a non-draft with a PR description and issue link. Thank you!

Ok sure np @elliette