Ask HN: Open Source Video Hosting Platforms?

I understand this is a loaded question. Video hosting is a big business and companies like vimeo, wistia etc. are thriving and it is a tough problem to solve (bandwidth, network, performance, cost etc) .

However, I wonder if there is any Open Source projects that tackle the beast of video hosting. It could focus on components such as:

- Storage

- Transcoding

- Performance (CDN delivery)

- Experience (Players such as videojs etc)

Each of these are projects by themselves. Anyone know any specific projects that target some or ideally ALL of these components ? I am specially interested in the harder ones like transcoding and CDN.