T3i Magic Lantern Ubuntu Video Stream Setup
📚 Resources
Canon
🏠 Canon USA → https://www.usa.canon.com/
📷 Canon T3i → https://global.canon/en/c-museum/prod...
📖 Canon T3i Manual → https://global.canon/en/c-museum/prod...
Magic Lantern
🏠 Home Page → https://www.magiclantern.fm/index.html
📥 Nightly Downloads → https://builds.magiclantern.fm/
📷 T3i Firmware (600D) → https://builds.magiclantern.fm/600D-1...
🔧 Install Guide → https://wiki.magiclantern.fm/install
📖 User Guide → https://wiki.magiclantern.fm/userguid...
❓ FAQ → https://wiki.magiclantern.fm/faq
💬 Forum → https://www.magiclantern.fm/forum/
💻 GitLab → https://foss.heptapod.net/magic-lante...
gphoto2
💻 GitHub → https://github.com/gphoto/gphoto2
ffmpeg
💻 GitHub → https://github.com/ffmpeg/ffmpeg
v4l-utils
💻 GitHub → https://github.com/gjasny/v4l-utils
🔧 LinuxTV Git → https://git.linuxtv.org/v4l-utils.git...
📖 LinuxTV API Docs → https://linuxtv.org/downloads/v4l-dvb...
📖 LinuxTV Wiki → https://linuxtv.org/wiki/index.php/V4...
Canon Community Thread
T3i LiveView White Box Removal Discussion → https://community.usa.canon.com/t5/EO...
Reddit Thread
Disabling the white box on Canon EOS Rebel T3i → / disabling_the_white_box_on_canon_eos_rebel...
🛒 Hardware
Canon T3i Dummy Battery
Micro HDMI to HDMI cable
HDMI to USB Type-A Capture Card
🖥️ Terminal Setup
sudo apt install gphoto2
sudo apt install ffmpeg
sudo apt install v4l-utils
📷 Camera Setup
On camera:
Press the Live View Shooting button
In camera menu:
Grid Display → Off
Auto Power Off → Off
Press Info button to hide overlays
On lens:
Set Focus Mode Switch to AF
Half-press shutter to autofocus
🔍 Check Camera is Detected (Linux)
ls /dev/video*
v4l2-ctl --list-devices
▶️ Test Camera Feed
ffplay /dev/video0
🎬 OBS Setup
1. Install and open OBS
2. Add Source → Video Capture Device (V4L2)
3. Settings:
Device: USB Video: USB Video (usb-0000:08:00.4-2)
Video Format: BGR3 (emulated) — smoothest option
Color Range: Full
4. Transform → Edit Transform:
Left: 100px
Right: 100px
Top: 50px
Bottom: 150px
🎞️ Free Software
🎬 Video Editor → https://www.openshot.org/
🖼️ Photoshop Alternative → https://www.photopea.com/
⚙️ Magic Lantern Settings
Clear Overlays → Always (removes white AF box)
Dual ISO
RAW video - ON
Spotmeter - Percent, AFbox (display brightness from a small spot)
Histogram - RAW RGB, Log
💡 Tips
To remove AF box without Magic Lantern: Canon menu → Live View → enable face tracking