Custom loader unclear documentation

[simonemazzoni]

Environment

• [ ] The stream has correct Access-Control-Allow-Origin headers (CORS)
• [ ] There are no network errors such as 404s in the browser console when trying to play the stream
• [ ] The issue observed is not already reported by searching on Github under https://github.com/dailymotion/hls.js/issues
• [x] The issue occurs in the latest reference client on http://dailymotion.github.io/hls.js/demo and not just on my page
• Link to playable M3U8 file: generated live, not available
• Hls.js version: 0.6.2-4
• Browser name/version: Google Chrome v.52
• OS name/version: Mac OS X 10.11.6

  Steps to reproduce

  1. Please provide clear steps to reproduce your problem
  2. Whenever possible, share a demo/example page which reproduces the problem you are having with the least amount of code possible.
  3. If the bug is intermittent, give a rough frequency if possible

Hello, I'm experiencing an unmanaged behavior using hls.js on a live HLS stream.

The HLS stream is generated using Wowza Streaming Engine that produces the playlist.m3u8 file containing the chunklist. The problem begins when I load the manifest using loadSource(src) api. If I try to load the source too early, I get a "semi-empty" playlist like this:

`#EXTM3U

EXT-X-VERSION:3

`

and consequently I get the error Uncaught TypeError: Cannot read property 'audioCodec' of undefined raised by `loadsuccess @ playlist-loader.js:357`` If I reload the page (or reload the source via loadSource) all work as expected since on the second try the manifest contains all the informations it needs.

So my guess is that the loading of the playlist is not handled correctly in case is incomplete. I tried to intercept the loading error usng the events, but nothing works, so I tried to write my own loader but the documentation on custom loaders isn't clear at all. Could please someone explain to me how to properly write a custom loader? What is the difference between loader, floader and ploader?

Thanks a lot.

Simone

[uldza]

This happens also when the stream in Wowza Streaming Engine is not correctly configured. When requesting such playlist from hls.js you get back playlist containing only:

#EXTM3U
#EXT-X-VERSION:3

And hls.js fails here since there is no levels.

Will try to implement fix.

[simonemazzoni]

It is exactly what I thought when the error happened. I tried to revert the version to 0.5.44 and it works just fine (I get a MANIFEST_PARSING_ERROR that I can listen to, for example, force source reload).

I'll wait for the fix. Thanks

[mangui]

@simonemazzoni could you plz recheck with latest hls.js/master ? you should now get a fatal MANIFEST_PARSING_ERROR error fired

[mangui]

fixed