Add start from and download length options

[Kethsar]

Allow downloading from a specified start time and downloading a specified length. Support both positive and negative values in the form of HH:MM:SS for start time, only positive for length. Will end up being inaccurate as stream segments are either 1, 2, or 5 seconds in length. ffmpeg can potentially do something about that, will see when implementing. This should make clipping ongoing streams easier and not require screen recording, which is disgusting.

[shimpossible]

I've had success manually setting cur_frag and cur_seq in download_stream to the offset I want to start from. Allowing that to be a configurable value from the command line would be helpful

[akash-s-simformsolutions]

Hello @Kethsar : do we have any update on this feature where we can pass --start and duration ?

[jpfl]

adding such a feature would make this perfect

[jpfl]

can anyone point me how to edit this in the code? older versions I think were only able to grab 24h and newer one can grab up to 5 days. so it has to be somehow possible to set it to only grab X hours before the current live segments.

[paradix]

I think this issue is partially solved by https://github.com/Kethsar/ytarchive/pull/198

But it still lacks the length option. @Kethsar @keredau would that be possible?

[Kethsar]

Yeah I was thinking of trying to put that in place now that keredau has added the other pieces. But as always, am lazy.

[keredau]

I actually have a branch in my fork where i'm working on that feature. :)

[com-py]

This compact downloader solves this issue and allows time-back video download. It was actually inspired by ytarchive. Check it out here: https://github.com/com-py/pyarxiver