Difference between revisions of "Video Recording"
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Revision as of 18:28, 1 February 2017
Contents
Status
Looking at what's available and what's required in order to record / stream events.
Checklist
| Item | Status |
|---|---|
| Sources | Available |
| Grabbing | Investigate compatible video grabbers availability |
| Compositing | TODO |
| Encoding | TODO |
| Streaming | TODO |
| Dumping | TODO |
Recording gear
| Device | Video | Audio | Where | Output | Notes |
|---|---|---|---|---|---|
| EPSON EB-915w Projector | ✓ | ✓ | FIXME | HDMI / VGA | Has various IOs |
| Device | Video | Audio | Where | Output | Notes |
|---|---|---|---|---|---|
| Raspberry Pi with PiCam | ✓ | ✗ | Fixme | H.264 stream | |
| Random USB Webcams | ✓ | ✗ | Fixme | V4L sources | |
| BMD Shuttle USB3 | ✓ | ✓ | fzn | USB3 | unsure of GNU/Linux support |
| Zoom H2N | ✗ | ✓ | fzn | USB | Needs 2 AA batteries |
Dumping / Streaming
Requirements
- sources (camcorders/DSLRs/webcams/microscopes...)
- frame grabbing (vga?hdmi?composite? Over PCI/PCI-E/USB3?)
- compositing / encoding (OBS? ffmpeg?)
- dumping / streaming
Grabbing
- Analog audio in
- HDMI in
- SD analog video in (Switchable between VGA / S-VIDEO / Composite)
- USB V4L devices (microscopes, webcams)
Compositing
- OBS requires a GPU which supports OpenGL 3.2 or latter
Encoding
- What is a baseline system to do real-time 720p x264
- What is the maximum bitrate we can fill upstream
- Encoder ={Ubiquiti link}=> Upstream relay ==> Internet
Dumping
- We need some fast local storage
- Low disk space warning ( with temporal estimation of remaining recording capacity )
