MediaFormat.KeyVideoBitrateLayering Field
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Set the bitrate distributions for temporal layering.
[Android.Runtime.Register("KEY_VIDEO_BITRATE_LAYERING", ApiSince=37)]
public const string KeyVideoBitrateLayering;[<Android.Runtime.Register("KEY_VIDEO_BITRATE_LAYERING", ApiSince=37)>]
val mutable KeyVideoBitrateLayering : stringField Value
- Attributes
Remarks
Set the bitrate distributions for temporal layering.
The associated value is a String in the format "ratio1;ratio2;...;ratioN", where N is the number of temporal layers - 1. Each ratio represents the bitrate allocation for the current layer and all lower layers combined, as a fraction of the total bitrate. There is no value for the highest temporal layer because it is always 1.0.
For example, if there are 3 temporal layers and the total bitrate is 1000kbps, a value of "0.3;0.6" would mean: Layer 0 (base layer): 30% of total bitrate (300kbps); Layer 0 + Layer 1: 60% of total bitrate (600kbps), so Layer 1 gets 30% (300kbps); Layer 0 + Layer 1 + Layer 2: 100% of total bitrate (1000kbps), so Layer 2 gets 40% (400kbps)
The ratios must be monotonically increasing. See MediaCodec.setParameters
Android reference for android.media.MediaFormat.KEY_VIDEO_BITRATE_LAYERING.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.