flet video error

[beyons]

Duplicate Check

• I have searched the opened issues and there are no duplicates

Describe the bug

../flutter-packages/flet_video/lib/src/utils/video.dart:76:5: Error: No named parameter with the name 'textScaleFactor'.
textScaleFactor: parseDouble(json["text_scale_factor"]),
^^^^^^^^^^^^^^^
../../../../../AppData/Local/Pub/Cache/hosted/pub.dev/media_kit_video-1.3.0/lib/src/subtitle/subtitle_view.dart:143:9: Context: Found this candidate, but the arguments don't match.
const SubtitleViewConfiguration({
^^^^^^^^^^^^^^^^^^^^^^^^^
Target kernel_snapshot_program failed: Exception

       FAILURE: Build failed with an exception.

Code sample

Code

[Paste your code here]

To reproduce

to reproduce this problem it's simple add "flet_video", to dependencies

Expected behavior

No response

Screenshots / Videos

Captures

[Upload media here]

Operating System

macOS

Operating system details

windows 11

Flet version

0.27.6

Regression

No, it isn't

Suggestions

No response

Logs

Logs

[Paste your logs here]

Additional details

No response

[ndonkoHenri]

Please share the complete logs.

[beyons]

[15:11:54] Flutter 3.27.4 installed ✅
[15:11:55] JDK installed ✅
Android SDK installed ✅
[15:12:00] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref "0.27.6" ✅
[15:14:02] Packaged Python app ✅
Registered Flutter user extensions ✅
[15:14:10] Customized app icons ✅
[15:14:26] Generated app icons ✅
Customized app splash images ✅
[15:14:32] Generated splash screens ✅
[15:16:11]
Running Gradle task 'assembleRelease'...
Gradle build config:
minSdkVersion: 23
targetSdkVersion: 35
versionCode: 1
versionName: 0.1.0
Running Gradle task 'assembleRelease'... 87,0s

       ../flutter-packages/flet_video/lib/src/utils/video.dart:76:5: Error: No named parameter with the name 'textScaleFactor'.
           textScaleFactor: parseDouble(json["text_scale_factor"]),
           ^^^^^^^^^^^^^^^
       ../../../../../AppData/Local/Pub/Cache/hosted/pub.dev/media_kit_video-1.3.0/lib/src/subtitle/subtitle_view.dart:143:9: Context: Found this candidate, but the arguments don't match.
         const SubtitleViewConfiguration({
               ^^^^^^^^^^^^^^^^^^^^^^^^^
       Target kernel_snapshot_program failed: Exception


       FAILURE: Build failed with an exception.

       * What went wrong:
       Execution failed for task ':app:compileFlutterBuildRelease'.
       > Process 'command 'C:\Users\21695\flutter\3.27.4\bin\flutter.bat'' finished with non-zero exit value 1

       * Try:
       > Run with --stacktrace option to get the stack trace.
       > Run with --info or --debug option to get more log output.
       > Run with --scan to get full insights.
       > Get more help at https://help.gradle.org.

       BUILD FAILED in 1m 24s
       Gradle task assembleRelease failed with exit code 1

[15:16:26] Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.27.4, on Microsoft Windows , locale fr-FR)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[!] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
! Some Android licenses not accepted. To resolve this, run: flutter doctor --android-licenses
[√] Chrome - develop for the web
[!] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.9.3)
X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++" workload, and include these components:
MSVC v142 - VS 2019 C++ x64/x86 build tools
- If there are multiple build tool versions available, install the latest
C++ CMake tools for Windows
Windows 10 SDK
[√] Android Studio (version 2023.2)
[√] VS Code (version 1.98.0)
[√] Connected device (3 available)
! Device 109933741A002712 is offline.
[√] Network resources

       ! Doctor found issues in 2 categories.

┌────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Error building Flet app - see the log of failed command above. │
└───────────────────────────────────────────────────────────────

[beyons]

i have only added flet_video in dependecies entry

[ndonkoHenri]

Clean the cache (delete the build directory), run the build command with --v and share it along with the content of your pyproject.toml or requirements.txt file.

[beyons]

this is my pyproject.toml

`
[project]

name = "NewFletApp"
version = "0.1.0"
description = "First apps with python flet framework"
readme = "README.md"
requires-python = ">=3.9"
authors = [
{ name = "Flet developer", email = "you@example.com" }
]
dependencies = [
"flet==0.27.6",
"httpx",
"requests",
"typing-extensions",
"flet-geolocator",
"flet-map",
"flet-permission-handler",
"flet-webview",
"flet-video"
]

[tool.flet]

org name in reverse domain name notation, e.g. "com.mycompany".

Combined with project.name to build bundle ID for iOS and Android apps

org = "com.beyons.flettest"

project display name that is used as an app title on Android and iOS home screens,

shown in window titles and about app dialogs on desktop.

product = "NewFletApp"

company name to display in about app dialogs

company = "Flet"

copyright text to display in about app dialogs

copyright = "Copyright (C) 2025 by Flet"

[tool.flet.app]
path = "src"

[tool.flet.splash]
android = false

[tool.flet.android]
min_sdk_version = 23

#[tool.flet.android.signing]

store and key passwords can be passed with --android-signing-key-store-password

and --android-signing-key-password options or

FLET_ANDROID_SIGNING_KEY_STORE_PASSWORD

and FLET_ANDROID_SIGNING_KEY_PASSWORD environment variables.

#key_store = "store.jks" # --android-signing-key-store
#key_alias = "upload"

[tool.uv]
dev-dependencies = [
"flet[all]==0.27.6",
]

[tool.flet.android.permission] # --android-permissions
"android.permission.CAMERA" = true
"android.permission.ACCESS_FINE_LOCATION" = true
"android.permission.ACCESS_COARSE_LOCATION" = true

[tool.flet.android.feature] # --android-features
"android.hardware.camera" = false

[tool.poetry]
package-mode = false

[tool.poetry.group.dev.dependencies]
flet = {extras = ["all"], version = "0.27.6"}
`

and this is the result of flet build apk -v

`Flutter 3.27.4 installed ✅
Flutter executable: C:\Users\21695\flutter\3.27.4\bin\flutter.bat
Dart executable: C:\Users\21695\flutter\3.27.4\bin\dart.bat
Configuring Flutter's path to JDK
Run subprocess: ['C:\Users\21695\flutter\3.27.4\bin\flutter.bat', 'config', '--no-version-check', '--suppress-analytics', '--jdk-dir=C:\Program Files\OpenLogic\jdk-17.0.12.7-hotspot']
[16:06:37] Setting "jdk-dir" value to "C:\Program Files\OpenLogic\jdk-17.0.12.7-hotspot".

       You may need to restart any open editors for them to read new settings.
       JDK installed ✅
       Android SDK installation found at C:\Users\21695\AppData\Local\Android\Sdk
       Android SDK package "cmdline-tools;latest" is already installed
       Android SDK package "platform-tools" is already installed
       Android SDK package "platforms;android-35" is already installed
       Android SDK package "build-tools;34.0.0" is already installed
       Android SDK installed ✅
       Run subprocess: ['C:\\Users\\21695\\flutter\\3.27.4\\bin\\dart.bat', 'run', '--suppress-analytics', 'serious_python:main', 'package', 'C:\\Users\\21695\\Desktop\\flet\\testbaby\\src', '--platform',
       'Android', '-r', 'flet-geolocator', '-r', 'flet-map', '-r', 'flet-permission-handler', '-r', 'flet-video', '-r', 'flet-webview', '-r', 'flet==0.27.6', '-r', 'httpx', '-r', 'requests', '-r',
       'typing-extensions', '--exclude', 'build', '--cleanup-packages', '--skip-site-packages']

[16:06:39] Running package command
Extra PyPi indexes: [https://pypi.flet.dev]
Created temp directory: C:\Users\21695\AppData\Local\Temp\serious_python_tempa62f933
Copying Python app from C:\Users\21695\Desktop\flet\testbaby\src to a temp directory
Creating app archive at C:\Users\21695\Desktop\flet\testbaby\build\flutter\app/app.zip from a temp directory
[16:06:40] Writing app archive hash to C:\Users\21695\Desktop\flet\testbaby\build\flutter\app/app.zip.hash
Deleting temp directory
Packaged Python app ✅
Found Flutter extension at C:\Users\21695\Desktop\flet\testbaby\build\flutter-packages\flet_geolocator
Found Flutter extension at C:\Users\21695\Desktop\flet\testbaby\build\flutter-packages\flet_map
Found Flutter extension at C:\Users\21695\Desktop\flet\testbaby\build\flutter-packages\flet_permission_handler
Found Flutter extension at C:\Users\21695\Desktop\flet\testbaby\build\flutter-packages\flet_video
Found Flutter extension at C:\Users\21695\Desktop\flet\testbaby\build\flutter-packages\flet_webview
Registered Flutter user extensions ✅
Found "icon" image at C:\Users\21695\Desktop\flet\testbaby\src\assets\icon.png
Found "icon" image at C:\Users\21695\Desktop\flet\testbaby\src\assets\icon.png
Found "splash_android" image at C:\Users\21695\Desktop\flet\testbaby\src\assets\splash_android.png
Run subprocess: ['C:\Users\21695\flutter\3.27.4\bin\flutter.bat', 'build', 'apk', '--no-version-check', '--suppress-analytics', '--build-name', '0.1.0']
[16:06:43]
[16:06:48] Running Gradle task 'assembleRelease'...
Gradle build config:
minSdkVersion: 23
targetSdkVersion: 35
versionCode: 1
versionName: 0.1.0
[16:07:27] ../flutter-packages/flet_video/lib/src/utils/video.dart:76:5: Error: No named parameter with the name 'textScaleFactor'.
textScaleFactor: parseDouble(json["text_scale_factor"]),
^^^^^^^^^^^^^^^
../../../../../AppData/Local/Pub/Cache/hosted/pub.dev/media_kit_video-1.3.0/lib/src/subtitle/subtitle_view.dart:143:9: Context: Found this candidate, but the arguments don't match.
const SubtitleViewConfiguration({
^^^^^^^^^^^^^^^^^^^^^^^^^
[16:07:42] Target kernel_snapshot_program failed: Exception

[16:07:43]
FAILURE: Build failed with an exception.

       * What went wrong:
       Execution failed for task ':app:compileFlutterBuildRelease'.
       > Process 'command 'C:\Users\21695\flutter\3.27.4\bin\flutter.bat'' finished with non-zero exit value 1

       * Try:
       > Run with --stacktrace option to get the stack trace.
       > Run with --info or --debug option to get more log output.
       > Run with --scan to get full insights.
       > Get more help at https://help.gradle.org.

       BUILD FAILED in 58s

[16:07:44] Running Gradle task 'assembleRelease'... 60,2s
Gradle task assembleRelease failed with exit code 1`

[HappyCoder256]

Same this syd

[ndonkoHenri]

AppData/Local/Pub/Cache/hosted/pub.dev/media_kit_video-1.3.0/

media_kit_video 1.3.0 is being used because of the below caret syntax we use.

flet-video/src/flutter/flet_video/pubspec.yaml

Lines 16 to 18 in 76f3f76

	media_kit: ^1.1.10
	media_kit_video: ^1.2.4
	media_kit_libs_video: ^1.0.4

[tct123]

I also have this problem. I am using flet v0.28.2 on linux.
my pyproject.toml:

[project]
name = "videoplayer"
version = "0.1.0"
description = ""
readme = "README.md"
requires-python = ">=3.9"
authors = [{ name = "Flet developer", email = "you@example.com" }]
dependencies = ["flet==0.28.2", "flet-video"]

[tool.flet]
# org name in reverse domain name notation, e.g. "com.mycompany".
# Combined with project.name to build bundle ID for iOS and Android apps
org = "com.mycompany"

# project display name that is used as an app title on Android and iOS home screens,
# shown in window titles and about app dialogs on desktop.
product = "videoplayer"

# company name to display in about app dialogs
company = "Flet"

# copyright text to display in about app dialogs
copyright = "Copyright (C) 2025 by Flet"

[tool.flet.app]
path = "src"

[tool.uv]
dev-dependencies = ["flet[all]==0.28.2"]

[tool.poetry]
package-mode = false

[tool.poetry.group.dev.dependencies]
flet = { extras = ["all"], version = "0.28.2" }

errormessage:

[15:56:12] Run subprocess: ['/flutter/bin/flutter', '--version', '--no-version-check', '--suppress-analytics']                                                          
           Flutter executable: /flutter/bin/flutter                                                                                                                     
           Dart executable: /flutter/bin/dart                                                                                                                           
[15:56:17] Created Flutter bootstrap project from gh:flet-dev/flet-build-template with ref "0.28.2" ✅                                                                  
           Run subprocess: ['/flutter/bin/dart', 'run', '--suppress-analytics', 'serious_python:main', 'package', '/home/anonym/videoplayer/src', '--platform', 'Linux',
           '-r', 'flet-video', '-r', 'flet==0.28.2', '--exclude', 'build', '--cleanup-packages']                                                                        
[15:56:22] Running package command                                                                                                                                      
           Extra PyPi indexes: [https://pypi.flet.dev]                                                                                                                  
           Creating asset directory: /home/anonym/videoplayer/build/flutter/app                                                                                         
           Created temp directory: /tmp/serious_python_tempIOGUUZ                                                                                                       
           Copying Python app from /home/anonym/videoplayer/src to a temp directory                                                                                     
           Configured Linux/ platform with sitecustomize.py                                                                                                             
           Installing [flet-video, flet==0.28.2] with pip command to /home/anonym/videoplayer/build/site-packages                                                       
           Downloading Python distributive from                                                                                                                         
           https://github.com/astral-sh/python-build-standalone/releases/download/20250205/cpython-3.12.9+20250205-x86_64-unknown-linux-gnu-install_only_stripped.tar.gz
           to a build directory                                                                                                                                         
[15:56:26] Extracting Python distributive                                                                                                                               
[15:56:35] Copying Flutter packages to /home/anonym/videoplayer/build/flutter-packages-temp                                                                             
           Cleanup installed packages                                                                                                                                   
[15:56:36] Creating app archive at /home/anonym/videoplayer/build/flutter/app/app.zip from a temp directory                                                             
           Writing app archive hash to /home/anonym/videoplayer/build/flutter/app/app.zip.hash                                                                          
           Deleting temp directory                                                                                                                                      
           Packaged Python app ✅                                                                                                                                       
           Found Flutter extension at /home/anonym/videoplayer/build/flutter-packages/flet_video                                                                        
           Registered Flutter user extensions ✅                                                                                                                        
[15:56:42] Found "icon" image at /home/anonym/videoplayer/src/assets/icon.png                                                                                           
           Copying image /home/anonym/videoplayer/src/assets/icon.png to /home/anonym/videoplayer/build/flutter/images                                                  
           Customized app icons ✅                                                                                                                                      
           Run subprocess: ['/flutter/bin/dart', 'run', '--suppress-analytics', 'flutter_launcher_icons']                                                               
[15:56:47]   ════════════════════════════════════════════                                                                                                               
                FLUTTER LAUNCHER ICONS (v0.14.3)                                                                                                                        
             ════════════════════════════════════════════                                                                                                               
                                                                                                                                                                        
           • Creating default icons Android                                                                                                                             
           • Overwriting the default Android launcher icon with a new icon                                                                                              
           • Creating adaptive icons Android                                                                                                                            
[15:56:48] • No colors.xml file found in your Android project                                                                                                           
           • Creating colors.xml file and adding it to your Android project                                                                                             
           • Creating mipmap xml file Android                                                                                                                           
           • Overwriting default iOS launcher icon with new icon                                                                                                        
[15:56:49] Creating Icons for Web...                                                                                                                                    
[15:56:50] Creating Icons for Windows...                                                                                                                                
           Creating Icons for MacOS...                                                                                                                                  
[15:56:51]                                                                                                                                                              
           ✓ Successfully generated launcher icons                                                                                                                      
           Generated app icons ✅                                                                                                                                       
           Run subprocess: ['/flutter/bin/flutter', 'build', 'linux', '--no-version-check', '--suppress-analytics', '--build-name', '0.1.0']                            
[15:56:52] Resolving dependencies...                                                                                                                                    
[15:56:53] Downloading packages...                                                                                                                                      
[15:56:54]   archive 3.6.1 (4.0.7 available)                                                                                                                            
             file_picker 8.3.7 (10.1.8 available)                                                                                                                       
             fl_chart 0.69.2 (1.0.0 available)                                                                                                                          
           ! flet 0.28.2 (overridden)                                                                                                                                   
             flutter_lints 2.0.3 (5.0.0 available)                                                                                                                      
             flutter_native_splash 2.4.4 (2.4.6 available)                                                                                                              
             image 4.3.0 (4.5.4 available)                                                                                                                              
             intl 0.19.0 (0.20.2 available)                                                                                                                             
             js 0.6.7 (0.7.2 available)                                                                                                                                 
             lints 2.1.1 (6.0.0 available)                                                                                                                              
             material_color_utilities 0.11.1 (0.12.0 available)                                                                                                         
             sensors_plus 4.0.2 (6.1.1 available)                                                                                                                       
             sensors_plus_platform_interface 1.2.0 (2.0.1 available)                                                                                                    
           ! serious_python 0.9.3 from git https://github.com/flet-dev/serious-python.git at 6c24e5 in src/serious_python (overridden)                                  
             toml 0.15.0 (0.16.0 available)                                                                                                                             
             url_strategy 0.2.0 (discontinued)                                                                                                                          
             vector_math 2.1.4 (2.1.5 available)                                                                                                                        
           ! wakelock_plus 1.3.2 (overridden)                                                                                                                           
           ! web 1.1.1 (overridden)                                                                                                                                     
             web_socket_channel 2.4.5 (3.0.3 available)                                                                                                                 
           ! webview_flutter_android 4.4.2 (overridden)                                                                                                                 
           ! window_manager 0.4.3 (overridden)                                                                                                                          
           Got dependencies!                                                                                                                                            
           1 package is discontinued.                                                                                                                                   
           16 packages have newer versions incompatible with dependency constraints.                                                                                    
           Try `flutter pub outdated` for more information.                                                                                                             
[15:56:55]                                                                                                                                                              
[15:57:27] Building Linux application...                                                                                                                                
           ERROR: ../flutter-packages/flet_video/lib/src/utils/video.dart:76:5: Error: No named parameter with the name 'textScaleFactor'.                              
           ERROR:     textScaleFactor: parseDouble(json["text_scale_factor"]),                                                                                          
           ERROR:     ^^^^^^^^^^^^^^^                                                                                                                                   
           ERROR: ../../../.pub-cache/hosted/pub.dev/media_kit_video-1.3.0/lib/src/subtitle/subtitle_view.dart:143:9: Context: Found this candidate, but the arguments  
           don't match.                                                                                                                                                 
           ERROR:   const SubtitleViewConfiguration({                                                                                                                   
           ERROR:         ^^^^^^^^^^^^^^^^^^^^^^^^^                                                                                                                     
           ERROR: Target kernel_snapshot_program failed: Exception                                                                                                      
           Build process failed                                                                                                                                         
           <_io.TextIOWrapper name=5 encoding='utf-8'>                                                                                                                  
           Run subprocess: ['/flutter/bin/flutter', 'doctor', '--no-version-check', '--suppress-analytics']                                                             
[15:57:33] Doctor summary (to see all details, run flutter doctor -v):                                                                                                  
           [✓] Flutter (Channel stable, 3.29.3, on Fedora Linux 42 (KDE Plasma Desktop Edition) 6.14.5-300.fc42.x86_64, locale de_DE.UTF-8)                             
           [✓] Android toolchain - develop for Android devices (Android SDK version 36.0.0-rc4)                                                                         
           [✓] Chrome - develop for the web                                                                                                                             
           [✓] Linux toolchain - develop for Linux desktop                                                                                                              
           [✓] Android Studio (version 2024.3.2)                                                                                                                        
           [✓] Connected device (2 available)                                                                                                                           
           [✓] Network resources                                                                                                                                        
                                                                                                                                                                        
           • No issues found!                                                                                                                                           
                                                                                                                                                                        
╭──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ Error building Flet app - see the log of failed command above.                                                                                                       │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

[HappyCoder256]

@ndonkoHenri @FeodorFitsner @InesaFitsner

Please look into this