Official Documentation

User Manual, Getting Started Guide, and Version Changelogs.

What's New in 2.4.6b

  • Remote Control Adjustments: Addressed mobile web app clipping and button expansion to ensure elements fit perfectly on phone screens.
  • Header Refinements: Fixed layout margin overlapping in the top header, ensuring version and status indicators display cleanly.
  • Audio Device Fix: Resolved the issue preventing audio input and output devices from loading properly.
  • Encoder Settings Input: Fixed a global shortcut filter preventing direct number input into the bitrate and advanced encoder setting fields.
  • Multi-language Updater: The updater now reads your UI language setting and provides localized update changelogs.

1. Quick Start & Initial Setup

1.1 Video Sources Selection (Cameras)

  1. In the main window, click on the SOURCES tab or the slide-out Controls panel on the left.
  2. For each of the 4 available channels (CH 1 through CH 4), select your connected USB or HDMI Capture device.
  3. Click the gear icon next to any channel to open device properties, where you can select the camera's native resolution, framerate, and color range.
  4. The camera's live feed will immediately display in the preview monitor.

1.2 Audio Setup (Microphones & Desktop Audio)

  1. The bottom section houses the OLED-style Audio Mixer featuring high-precision VU meters.
  2. Assign each input microphone (e.g., USB microphone, XLR interface, or line-in) to the desired channel.
  3. Desktop Audio Capture: MultiResolve includes a built-in WASAPI Loopback capture engine that records system audio directly (games, music, Discord, Zoom) in crystal-clear 48kHz stereo quality.
  4. Adjust volume levels using the individual faders and ensure audio peaks do not cross into the red zone (clipping above 0 dB).

1.3 Setting the Recording Output Folder

  • Open Settings (⚙) -> RECORDING category.
  • Click BROWSE and choose your destination storage drive (a fast NVMe SSD is strongly recommended to prevent dropped frames).
  • MultiResolve automatically creates an organized timestamped folder for each recording session (e.g., 20260912_213000).
  • Click OPEN FOLDER to quickly open the current recording directory in your system file manager.

2. Resolution, Framerate & Codecs (Video Settings)

2.1 Master Recording Resolution

Under Settings -> RECORDING, select the master resolution for all recorded camera channels:

  • 3840x2160 (4K UHD) - Maximum fidelity for 4K video production and mastering.
  • 2560x1440 (2K QHD) - Excellent balance between high sharpness and optimized disk space.
  • 1920x1080 (1080p FHD) - Industry standard broadcast quality (recommended for most setups).
  • 1280x720 (720p HD) - Lightweight mode for entry-level hardware or quick review.
  • 640x480 (SD) - Legacy testing mode.

2.2 Global Framerate

Choose from standard production framerates:

  • 60.00 fps / 59.94 fps - Ultra-smooth motion dynamics (gaming, sports, fast action).
  • 50.00 fps - European PAL broadcast standard.
  • 30.00 fps / 29.97 fps - Standard web video and NTSC broadcast.
  • 24.00 fps / 23.976 fps - Cinematic motion cadence.

2.3 Video Encoders & HEVC / H.265 Acceleration

MultiResolve utilizes direct hardware acceleration via Windows Media Foundation:

  • NVIDIA NVENC (HEVC / H.264) - Lightning-fast GPU hardware encoder on NVIDIA GeForce/RTX graphics cards with minimal CPU usage.
  • AMD AMF (HEVC / H.264) - Dedicated hardware encoder on AMD Radeon graphics cards.
  • Intel QuickSync - Integrated GPU hardware encoding on Intel Core and Arc processors.
  • Software (x264) - Reliable CPU software fallback when GPU encoders are unavailable.

2.4 Advanced Quality Settings

  • Toggle Unlock Advanced Quality Settings to expose professional encoder controls.
  • Adjust Target / Max Bitrate, Rate Control (CBR, VBR, CQP), Keyframe Interval, and B-Frames for precise file-size optimization.

3. Hardware Benchmark & 1-Click Optimizer

If you are unsure of the best settings for your computer:

  1. Open Settings (⚙) -> RECORDING tab.
  2. Locate the "HARDWARE BENCHMARK & AUTO-OPTIMIZER" section.
  3. Click the cyan "⚡ BENCHMARK HARDWARE & OPTIMIZE" button.
  4. Within seconds, MultiResolve will:
    • Detect CPU core count and thread capacity.
    • Detect GPU model and dedicated VRAM amount.
    • Measure actual sequential disk write speed (MB/s).
    • Verify hardware encoder support (NVENC, AMF, QuickSync).
  5. The test assigns your system a performance tier (Tier 1 to Tier 4) and displays recommended resolution, framerate, and bitrate settings.
  6. Click "APPLY RECOMMENDED" to automatically configure optimal recording parameters with one click!

4. Live Multicam Switching & Keyboard Shortcuts

4.1 Live Camera Switching (Director Mode)

  • While recording is active, you are the director!
  • Click any camera preview monitor or press its assigned keyboard hotkey to switch the Active Program Source.
  • The active camera is highlighted with a red Tally Border and a LIVE badge.
  • MultiResolve logs every cut with millisecond precision to assemble your XML timeline automatically.

4.2 Reassigning Source Hotkeys

  1. Open Settings (⚙) -> SYSTEM category.
  2. Under SOURCE HOTKEYS, you will see cards for all 4 camera channels.
  3. Click on the camera card you want to reassign (it will glow cyan and prompt "Press Key...").
  4. Press any key on your keyboard (e.g., number keys 1-4, Numpad, or letters A, S, D, F).
  5. The key is instantly bound and ready for live switching during recording!

5. Audio Mixer, Zero-Delay Monitoring & Sync Bridge

5.1 Sync Bridge (Zero Audio/Video Desync)

When you click the red REC button:

  1. MultiResolve starts a 3-second Sync Bridge countdown.
  2. During countdown, video and audio buffers are locked, hardware encoders are primed, and any buffer backlog is cleared.
  3. At zero, all camera channels and audio tracks begin simultaneous capture with identical starting timecodes, guaranteeing 100% frame-accurate lip sync.

5.2 Zero-Delay Audio Monitoring

  • Toggle the LIVE MONITOR switch to hear the master mix in real time through your headphones.
  • The audio engine employs low-latency SDL2 playback capped at 30ms of buffered audio, completely preventing audio lag accumulation and echo.

5.3 Multi-Track Audio Recording & Camera Linking

  • Click the Gear (⚙) icon on any audio channel strip to access Channel Settings.
  • Separate Track (ISO REC): Toggle on a per-channel basis to record individual raw WAV files for specific microphones.
  • Camera Link Binding: Link an audio channel directly to a video channel (e.g. Audio 2 to Camera 1). When exporting XML, MultiResolve will automatically create sticky links between the video cuts and the designated audio track.

6. Premiere Pro & DaVinci Resolve XML Export

When you click STOP, MultiResolve automatically generates an industry-standard Final Cut Pro / Premiere XML timeline (multicam.xml) in your recording folder:

  • Each camera channel is placed onto its own video track (V1, V2, V3, V4).
  • Cuts made during recording are automatically trimmed on upper tracks so the active angle is revealed underneath.
  • Synchronized master audio is placed on the audio timeline.
  • Simply open Premiere Pro or DaVinci Resolve and choose File -> Import -> XML to open the complete multi-track sequence.

7. Real-Time Telemetry & Performance Monitor

Located in the BottomStatusBar and the dedicated Studio Performance & Telemetry window (MONITOR button):

  • FPS: Real-time rendering framerate with color-coded status indicator.
  • Dropped Frames: Real-time dropped frame counter.
  • Write Speed: Total disk write throughput in MB/s across all active files.
  • CPU & RAM: Live memory usage (MB) and processor load percentage.
  • perf_stats.log: Continuous second-by-second telemetry logging saved directly into your recording directory.

8. Troubleshooting & Frequently Asked Questions (FAQ)

Q1: Camera feed is black or not showing?

  • Solution 1: Verify the camera is not in use by another application (e.g., Windows Camera, OBS, Zoom). Close other programs using the webcam.
  • Solution 2: In the Sources panel, click REFRESH SOURCES to rescan all USB and HDMI capture devices.
  • Solution 3: Open camera properties (gear icon) and try selecting a different resolution or framerate (e.g., 1080p @ 30fps).

Q2: Dropped frames counter is increasing during recording?

  • Solution 1: The storage drive may be too slow. Run the Hardware Benchmark & Optimize tool in Settings to measure write speed. Ensure you are recording to an SSD (preferably NVMe).
  • Solution 2: Switch video encoder to hardware accelerated mode (NVIDIA NVENC or AMD AMF) instead of software x264.
  • Solution 3: Lower the master recording resolution from 4K to 2K or 1080p, or decrease quality preset from Ultra to High/Medium.

Q3: Audio is out of sync with video on a specific camera?

  • Solution: USB webcams often introduce 60-120ms of hardware image processing delay. In the AUDIO settings panel, adjust the Channel Delay (ms) slider for that channel's microphone in 10ms increments to achieve perfect lip sync.

Q4: Camera switching hotkeys are not responding?

  • Solution 1: Check Settings -> SYSTEM -> SOURCE HOTKEYS to verify the desired key is assigned. Click the card to rebind.
  • Solution 2: Make sure the MultiResolve application window is focused by clicking inside it.