Add the ability to choose a specific duration for recording live streams

Describe your suggested feature

Tapping the download button on the page of a live stream records a very small portion (mostly 30 to 60 seconds long), rather than letting the user choose a specific duration for which they want to record that stream.

A possible execution for this feature: when the user taps on the download button, a dialog box should show up with a text field where the user must input the desired duration for recording the stream in minutes (and possibly hours in another text field next to it).

Other details

If possible, the dialog box could also include a text field to input the filename of the recorded stream, in case the user wants to record the same stream again at a later time. Currently, choosing to download a stream that has been previously recorded overwrites the existing file, unless the user renames that file in advance.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
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Start at the live-stream page's download action and trace how recording is initiated. Determine where a duration dialog and optional filename input would fit in the Android flow. Done means users can choose a recording duration and, where supported, a filename without unintentionally overwriting an earlier recording.