Allow downloading media for subset of records (instead of all at once)

What is the general goal of the feature?
To select a subset of records for download rather than always having to export ALL media Downloading bulk photos - #11 by ebaptista

What are the most likely user stories for how and when this would be used by someone on your team?
*when there are multiple “rounds” of a survey, with interim analysis - e.g. in the case of a Pacific Island Nation one island is surveyed in October, a different island is surveyed in November etc. and results from each island are analysed at the end of each “round” (followed by a full analysis after all islands are complete).
*when on an unstable/slow internet connection so needing to work offline rather than viewing media files online via URL.

Can you sketch out graphically how you think this should look/work in practice?
There is already the ability to filter/select specific records on the “data” screen of a survey in Kobo Toolbox. The only option that is then available is “Update selected”. Suggest adding an “Export selected” option that then takes you through to the Export screen

How useful would this feature be to other users or organizations?
I believe it would be useful to anyone who collects photos/videos/media as part of their survey - looking through the forums there have been several recent questions about media.

What can you contribute to making this feature a reality?
Analysis and test support - apologies I can’t (yet) write proper code!