How to Configure scrcpy for 2.7K Screen Capture at 60 FPS with Low Latency

If you're looking to mirror or record your Android screen in high quality using scrcpy, achieving optimal settings for 2.7K resolution at 60 FPS with latency under 5ms is entirely feasible. Here’s a step-by-step guide to help you achieve the best performance.

Why Use scrcpy?

scrcpy is an open-source tool that allows users to control Android devices from their computer. Known for its lightweight nature and flexibility, scrcpy is popular among developers and gamers for screen mirroring and recording with minimal latency.

Step 1: Install or Update scrcpy

Before configuring scrcpy, ensure you have the latest version installed. You can download or update it using the following command (Linux users) or visit the official GitHub page:

sudo apt update && sudo apt install scrcpy

For Windows and macOS, precompiled binaries are available on GitHub.

Step 2: Configure scrcpy for High-Quality Output

To achieve a 2.7K resolution and 60 FPS while maintaining low latency, you need to adjust scrcpy’s parameters. Use the command below:

scrcpy --max-size 2700 --bit-rate 32M --max-fps 60

Parameter Breakdown:

  • --max-size 2700: Sets the maximum screen resolution to 2.7K (2700 pixels on the longer side).
  • --bit-rate 32M: Configures the bitrate to 32 Mbps, ensuring high-quality visuals.
  • --max-fps 60: Caps the frame rate at 60 FPS for smooth playback.

Step 3: Optimize for Low Latency

To maintain latency under 5ms, follow these tips:

1. Use a USB Connection

USB offers significantly lower latency than wireless methods. Use a USB 3.0 or higher cable for faster data transfer.

2. Disable Video Buffering

Buffering can increase latency. Add the --no-display-buffer option:

scrcpy --max-size 2700 --bit-rate 32M --max-fps 60 --no-display-buffer

3. Optimize Bitrate

A higher bitrate improves quality but can increase latency. Experiment with values (e.g., 20M–32M) to find the best balance between performance and responsiveness.

Step 4: Optional Enhancements

Record Your Screen

To capture the mirrored output as a video:

scrcpy --record file.mp4 --max-size 2700 --bit-rate 32M --max-fps 60

Use Advanced Codecs

If your device supports H.265 (HEVC), enable it for better compression and reduced latency:

scrcpy --codec-options "profile=hevc" --max-size 2700 --bit-rate 32M --max-fps 60

Step 5: Verify Performance

Once scrcpy is running, interact with your device to ensure:

  • The resolution and frame rate match your settings.
  • Latency remains below 5ms.

If latency exceeds your target, consider:

  • Lowering the --bit-rate.
  • Testing your USB connection quality.

By following these steps, you can optimize scrcpy for high-quality screen mirroring or recording at 2.7K resolution and 60 FPS with minimal latency. These settings make it ideal for gaming, app demonstrations, or content creation where visual fidelity and responsiveness are critical.

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