Fixing ffmpeg crashes

[YpNo]

Fixing ffmpeg crashes in _start_stream function + Supporting HLS/Dash protocol
Fix #13

[kaffetorsk]

Thanks for PR

Lot of changes here, can you describe what fail there is in _start_stream() and why?

PS: What kind of camera are you using?

[YpNo]

Explained in issue discussion.

I've used Arlo Pro 4 Cameras and 1 Arlo Doorbell essential.

[YpNo]

Hi,
I reviewed my PR due to high cpu load because of ffpmeg video transcoding for the idle stream.
I've reduce the modifications on ffpmeg options. I think the main issue have came from audio format.

[YpNo]

Hi @kaffetorsk,

Do you think we can merge this PR ?
I saw you have closed the issue.

If you want to optimize what I did, please do :)

Regards

[kaffetorsk]

I'm rejecting this PR for several reasons:

1. Too many changes that are somewhat randomly grouped together.
2. When asked why you changed the ffmpeg params, the answer was basically that you just tried different combinations.
3. I cannot replicate your issue, i don't think this repo is to blame, else other users would chime in
4. FFMPEG version is set in order to support SRT.
5. bsf dump_extra is needed to keep the proxy stream alive while switching pipe input.