We have tested music & video editing apps in our testing projects.

Following are some of the tested projects name:
Lomotif App
Square Sized App
Video Motion App

Testing platform:  iOS and Android

Team Size: 5-10 QA Engineers

Types of testing: Functional testing, Usability testing, and Compatibility testing

Test Deliverables: Test cases, Defect Report and Test Summary Report

Testing Tools: Appium, Katalon

Test Management Tools: JIRA, MantisBT, Test Lodge, Test Rail, Asana, Trello, Google Spreadsheet