[WIP] ContentDownloader Tool

[PaulRosset]

PS: This is a new PR from #548.

What's included?

Download a movie content online then play it offline

• Build on top of the rx-player
• Full implementation API for download2go (Download,Resume,Pause, Delete, Get)
• Dash-mpeg (Base and Template representation index supported)
• Download of encryted content supported with license and state persistent (EME-MSE-Widevine-Playready)
• Use of IndexDB, to store assets.
• Available demo here: https://d2g-canalplus.paulrossethings.com/
• Typescript/rxjs
• Add a single dependencie: idb, a wrapper to use indexDB with promises

Review

• Check together for logging strategy
• Check for forgotten use of feature that are not available in certain browsers (IE11) ?
• Need feat/offline-playback PR to work

[peaBerberian]

This is a shallow first glance over this branch as we might want to finally merge it soon.

I just scrolled over if for now to look principally at interactions with the core of the RxPlayer

[et84121]

Hey folks, thanks for your awesome work on RX-Player.
what is the status of this PR? 
I want to use the offline playback feature. 
Is there anything I can do to help?

ping @peaBerberian

[peaBerberian]

Hi @et84121, and thanks!

It is still a feature that is wanted in the long term, but its priority was lowered at Canal+.

We are however going back on it once in a while to be sure this PR does not go too stale.
I know @alaamoum worked on it a little some months ago. Though I don't see his branch, did you push your work Achraf so we could have a better base - even if its not functional ?

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Anyway, if you want to work on it, you're very welcome to do so.

The global idea is too use IndexedDB APIs to store media segments and metadata, to later be able to play it at any time through the RxPlayer's "local" transport (offline playback though the RxPlayer's "local" transport is actually already used at Canal + on some set-top boxes, though the content-downloading part is not done there through web APIs nor by the RxPlayer).

What PaulRosset has done here was actually working at the time for most contents, but it had some rough edge.
Especially, last time I checked, it wasn't completely satisfactory on encrypted content playback and some polishing needed to be done for the edge cases (for example, what to do if the user closes the page before the tool has completely remove a content that was asked to be removed ?).
I'm not sure of how much efforts are needed to rebase that branch to the current RxPlayer version, though Achraf might have a better idea on this.

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If you don't want and/or don't have time to implement the whole feature, you could do something simpler on your side that just handle the contents you encounter. Here, you would just have to output a format compatible to the RxPlayer's "local" transport.

[et84121]

Hi @PaulRosset, Thank you for your thorough response.

I am working on rebasing this branch, but I am not sure I will complete it finally.

In addition, I have a few questions I want to ask.

• Persistent license renewal:
  Is there any mechanism to achieve persistent license renewal? In more detail, does it store a new persistent license after the existing license has been renewed?
• remove Rx-JS:
  I have read that you think Rx-JS is not so good in release notes. Should I remove it while I rebase this branch?

Thank you again for your detailed response.