[camera] Taking pictures is too slow on some devices

Hi, I'm making a camera app with samsung s8 device and camera package.
However, there is a problem with the shooting speed being too slow on the Android device.
It takes about 0.5 to 1.5 second to shoot. (I used camera/example for testing)

The shooting speed on the Android(S8) is too slow, so even if I shoot with the flash on, the flash effect is not applied because the shooting is completed after the flash is off.

I wonder if it's a fundamental problem with the package, or it's a problem that only occurs on my S8.

Steps to Reproduce

Run camera/example with AOS device.
Turn on the flash(torch or always mode).
Press the capture button.
Flash blinks when taking pictures.
When flash is off, pictures are taken.

Expected results:
Photo with flash effect applied.

Actual results:
Photos without flash effect applied.

@nero-angela

Hi @nero-angela
I just tried budget videos, with a much slower process (Samsung M02s) and every pic taken has an on-time flash effect using official sample

flutter doctor -v

[✓] Flutter (Channel stable, 2.2.2, on Microsoft Windows [Version 10.0.19043.1055], locale en-US)
    • Flutter version 2.2.2 at C:\Users\Taha\Code\flutter_stable
    • Framework revision d79295af24 (10 days ago), 2021-06-11 08:56:01 -0700
    • Engine revision 91c9fc8fe0
    • Dart version 2.13.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\Taha\Code\SDK
    • Platform android-30, build-tools 30.0.3
    • ANDROID_SDK_ROOT = C:\Users\Taha\Code\SDK
    • Java binary at: C:\Users\Taha\Code\openjdk\bin\java.exe
    • Java version OpenJDK Runtime Environment (build 1.8.0-262-b10)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[✓] Visual Studio - develop for Windows (Visual Studio Community 2019 16.10.2)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.10.31410.357
    • Windows 10 SDK version 10.0.19041.0

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/windows#android-setup for detailed instructions).

[✓] IntelliJ IDEA Community Edition (version 2021.1)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.1.1
    • Flutter plugin version 57.0.5
    • Dart plugin version 211.7233

[✓] VS Code (version 1.57.1)
    • VS Code at C:\Users\Taha\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.23.0

[✓] Connected device (5 available)
    • SM M025F (mobile)       • R9ZR205XX0A   • android-arm    • Android 11 (API 30)
    • sdk gphone x86 (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • Windows (desktop)       • windows       • windows-x64    • Microsoft Windows [Version 10.0.19043.1055]
    • Chrome (web)            • chrome        • web-javascript • Google Chrome 91.0.4472.114
    • Edge (web)              • edge          • web-javascript • Microsoft Edge 91.0.864.48

! Doctor found issues in 1 category.

Can you please share Android version you're running? Are you using stock firmware or custom rom?
Thank you

@TahaTesser

Hi @TahaTesser

My android version is Android 9 (API 28) and I am using the S8 after factory reset.

flutter doctor -v

[✓] Flutter (Channel unknown, 2.2.0, on macOS 11.3.1 20E241 darwin-x64, locale ko-KR)
    • Flutter version 2.2.0 at /Users/nero/Project/FlutterContribution/flutter
    • Framework revision b22742018b (5 weeks ago), 2021-05-14 19:12:57 -0700
    • Engine revision a9d88a4d18
    • Dart version 2.13.0

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at /Users/nero/Library/Android/sdk
    • Platform android-30, build-tools 29.0.2
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.5, Build version 12E262
    • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 3.6)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 44.0.2
    • Dart plugin version 192.7761
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)

[✓] VS Code (version 1.57.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.23.0

[✓] Connected device (2 available)
    • SM G950N (mobile) • ce0317136a2c08f10c • android-arm64  • Android 9 (API 28)
    • Chrome (web)      • chrome             • web-javascript • Google Chrome 91.0.4472.114

flash_test.mp4

Also reproducible on:

ONEPLUS A6003 (mobile) • b0a181c6 • android-arm64 • Android 10 (API 29)

(This is currently only my own device ... I will update this list, when I can go back to the office, and have more real test devices available ...)

flutter doctor -v

[✓] Flutter (Channel stable, 2.2.2, on macOS 11.4 20F71 darwin-arm, locale en-DE)
    • Flutter version 2.2.2 at /Users/davidwimmer/flutter
    • Framework revision d79295af24 (2 weeks ago), 2021-06-11 08:56:01 -0700
    • Engine revision 91c9fc8fe0
    • Dart version 2.13.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/davidwimmer/Library/Android/sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.5.1, Build version 12E507
    • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] ... all my IDEs ...

[✓] Connected device (2 available)
    • ONEPLUS A6003 (mobile) • b0a181c6 • android-arm64  • Android 10 (API 29)
    • Chrome (web)           • chrome   • web-javascript • Google Chrome 91.0.4472.114

@Tienisto

Thx @Tienisto, just checked the fix on my xiaomi mi lite 5g and it works 👍

This issue should be fixed in the CameraX implementation of the camera plugin, so please try it out!

If you find a similar issue with that implementation (or any other issues), please feel free to file a separate issue.

@camsim99

@camsim99
I've taken several tens of photos of the same scene and on average it took 1753ms with a fix from #84957 (comment) and 358 without it.
Test code from #134300 (comment)

  camera: 0.10.5+2
  camera_android_camerax: 0.6.1+1

I'm experiencing the same issue on a Samsung Galaxy A50s running Android 11. Taking a picture is extremely slow, sometimes taking up to 4-5 seconds. We recently upgraded the camera package from version 0.10.0+4 to 0.11.0+2, which introduced the switch from camera_android to camera_android_camerax. Additionally, we updated Flutter from version 3.13.1 to 3.24.0. I've already implemented the suggested fix mentioned here, but the issue persists. Could anyone help resolve this or at least explain why CameraX is causing such delays in capturing images? I appreciate any assistance.

@camsim99

@camsim99
ugprading from camera 10 to 11 reduce the time from 500ms to 300ms. But I'm looking for something like 50ms, is this possible?

[camera] Fix Android autofocus state reading (flutter#5025)

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[camera] Taking pictures is too slow on some devices #84957

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[camera] Taking pictures is too slow on some devices #84957

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TahaTesser commented on Jun 21, 2021

nero-angela commented on Jun 22, 2021

SunlightBro commented on Jun 25, 2021

Also reproducible on:

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delfme commented on Oct 21, 2023

SpirikleOfficial commented on Dec 8, 2023

camsim99 commented on Mar 27, 2024

vodemn commented on Apr 5, 2024

Buenaventura-Celine commented on Sep 6, 2024

victkk commented on Oct 2, 2024

abhitheawesomecoder commented on Dec 16, 2024

clhey commented on Jun 15, 2025

filio-corp commented on Dec 8, 2025

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