[BUG] iOS - Asset picker with RequestType.video incorrectly shows images in addition to videos

[dingh123]

Describe the bug
When using AssetPicker.pickAssets with requestType: RequestType.video on iOS, the picker still returns both images and videos, instead of only videos. Android behaves correctly.

How to reproduce
Steps to reproduce the behavior:

1. Use the following code in a Flutter app:

final List<AssetEntity>? assets = await AssetPicker.pickAssets(
  context,
  pickerConfig: AssetPickerConfig(
    maxAssets: 1,
    requestType: RequestType.video,
  ),
);

2. Run the app on an iOS device (iPhone 13, iOS 18.3).
3. Open the asset picker and select assets.
4. Observe that both images and videos are shown in the picker.

Expected behavior
The asset picker should display only video assets, consistent with requestType: RequestType.video.

Version information

• Device: iPhone 13
• OS: iOS 18.3
• Package Version: wechat_assets_picker 9.8.0
• Flutter Version: 3.35.4

Additional context

• The issue only occurs on iOS. Android correctly filters only video assets.
• The images currently displayed on iOS are not Live Photos, but regular static images. This indicates that the picker fails to correctly identify and filter out non-video media types.

[AlexV525]

Is this reproducible with the newly-cloned example?

[dingh123]

Is this reproducible with the newly-cloned example?

I have tested this again using the newly-cloned example project.

Here are my findings:

1. Using the built-in “Pick videos” / requestType: RequestType.video example:

   • The picker still shows both images and videos.
   • This reproduces the same issue I described originally.

2. When using a custom configuration with explicit filterOptions:
   (e.g. adding a DurationConstraint under videoOption)

AssetPicker.pickAssets(
  context,
  pickerConfig: AssetPickerConfig(
    maxAssets: maxAssetsCount,
    selectedAssets: assets,
    requestType: RequestType.video,
    filterOptions: FilterOptionGroup(
      videoOption: const FilterOption(
        durationConstraint: DurationConstraint(
          max: Duration(minutes: 1),
        ),
      ),
    ),
  ),
);

• In this case, filtering works correctly and only videos are shown.
• So custom filter options behave normally.

This suggests that the default iOS filtering logic for RequestType.video may not be applied correctly, while custom filter conditions trigger the expected behavior.

I have attached a screen recording showing the difference.

2025-12-06_103733_905.mp4

Please let me know if more information is needed.

[fluttercandies-dev]

AI Summary: The iOS asset picker incorrectly displays images when requestType is set to video. This issue only occurs on iOS, not Android.