moonfire-nvr/guide
Scott Lamb 307a3884a0 drop ffmpeg support
* switch the config interface over to use Retina and make the test
  button honor rtsp_transport = udp.

* adjust the threading model of the Retina streaming code.

  Before, it spawned a background future that read from the runtime and
  wrote to a channel. Other calls read from this channel.

  After, it does work directly from within the block_on calls (no
  channels).

  The immediate motivation was that the config interface didn't have
  another runtime handy. And passing in a current thread runtime
  deadlocked. I later learned this is a difference between
  Runtime::block_on and Handle::block_on. The former will drive IO and
  timers; the latter will not.

  But this is also more efficient to avoid so many thread hand-offs.
  Both the context switches and the extra spinning that
  tokio appears to do as mentioned here:
  https://github.com/scottlamb/retina/issues/5#issuecomment-871971550

  This may not be the final word on the threading model. Eventually
  I may not have per-stream writing threads at all. But I think it will
  be easier to look at this after getting rid of the separate
  `moonfire-nvr config` subcommand in favor of a web interface.

* in tests, read `.mp4` files via the `mp4` crate rather than ffmpeg.
  The annoying part is that this doesn't parse edit lists; oh well.

* simplify the `Opener` interface. Formerly, it'd take either a RTSP
  URL or a path to a `.mp4` file, and they'd share some code because
  they both sometimes used ffmpeg. Now, they're totally different
  libraries (`retina` vs `mp4`). Pull the latter out to a `testutil`
  module with a different interface that exposes more of the `mp4`
  stuff. Now `Opener` is just for RTSP.

* simplify the h264 module. It had a lot of logic to deal with Annex B.
  Retina doesn't use this encoding.

Fixes #36
Fixes #126
2022-03-18 13:22:47 -07:00
..
build.md drop ffmpeg support 2022-03-18 13:22:47 -07:00
developing-ui.md mass markdown reformatting 2021-04-01 12:32:31 -07:00
install-version.png add screenshot for selecting guide ver 2022-03-16 12:35:57 -07:00
install.md prepare v0.7.2 2022-03-16 18:31:12 -07:00
schema.md preparing v0.7.0 2021-10-26 18:54:26 -07:00
secure.md move perms to proper spot in config 2022-03-16 18:31:07 -07:00
troubleshooting.md drop ffmpeg support 2022-03-18 13:22:47 -07:00