Control playback resolution

Learn how to control video quality and rendition order in the FastPix Flutter Player.

The FastPix Flutter Player lets you lock playback to a target resolution, set min/max bounds, and control the order in which renditions are selected.

Set a target resolution

Lock playback to a specific resolution:

1
final qualityControl = FastPixPlayerQualityControl(
2
  resolution: FastPixResolution.p720,
3
);

Set a resolution range

Define minimum and maximum boundaries. The player switches between levels within this range based on network conditions:

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final qualityControl = FastPixPlayerQualityControl(
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  minResolution: FastPixResolution.p480,
3
  maxResolution: FastPixResolution.p1080,
4
);

Set rendition order

Control which quality level the player selects first:

• asc (ascending): starts at the lowest resolution and scales up. Better for poor connectivity.
• desc (descending): starts at the highest resolution and scales down. Better for high-quality first impressions.

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final qualityControl = FastPixPlayerQualityControl(
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  minResolution: FastPixResolution.p480,
3
  maxResolution: FastPixResolution.p1080,
4
  renditionOrder: FastPixRenditionOrder.desc,
5
);

Apply quality control to playback

Pass the qualityControl object to your data source:

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final dataSource = FastPixPlayerDataSource.hls(
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  playbackId: 'your-playback-id-here',
3
  streamType: StreamType.onDemand,
4
  qualityControl: qualityControl,
5
);

Supported resolutions

Note: If renditionOrder is set to asc, the player starts with the lowest resolution and scales up based on network. Use desc to prefer high-quality playback immediately.