VideoRendererEventListener

default void onDroppedFrames(int count, long elapsedMs)

Called to report the number of frames dropped by the renderer. Dropped frames are reported whenever the renderer is stopped having dropped frames, and optionally, whenever the count reaches a specified threshold whilst the renderer is started.

default void onRenderedFirstFrame(Object output, long renderTimeMs)

Called when a frame is rendered for the first time since setting the output, or since the renderer was reset, or since the stream being rendered was changed.

default void onVideoCodecError(Exception videoCodecError)

Called when a video decoder encounters an error.

This method being called does not indicate that playback has failed, or that it will fail. The player may be able to recover from the error. Hence applications should not implement this method to display a user visible error or initiate an application level retry. onPlayerError is the appropriate place to implement such behavior. This method is called to provide the application with an opportunity to log the error if it wishes to do so.

default void onVideoDecoderInitialized(
    String decoderName,
    long initializedTimestampMs,
    long initializationDurationMs
)

Called when a decoder is created.

default void onVideoDecoderReleased(String decoderName)

Called when a decoder is released.

default void onVideoDisabled(DecoderCounters counters)

Called when the renderer is disabled.

default void onVideoEnabled(DecoderCounters counters)

Called when the renderer is enabled.

default void onVideoFrameProcessingOffset(
    long totalProcessingOffsetUs,
    int frameCount
)

Called to report the video processing offset of video frames processed by the video renderer.

Video processing offset represents how early a video frame is processed compared to the player's current position. For each video frame, the offset is calculated as Pvf - Ppl where Pvf is the presentation timestamp of the video frame and Ppl is the current position of the player. Positive values indicate the frame was processed early enough whereas negative values indicate that the player's position had progressed beyond the frame's timestamp when the frame was processed (and the frame was probably dropped).

The renderer reports the sum of video processing offset samples (one sample per processed video frame: dropped, skipped or rendered) and the total number of samples.

default void onVideoInputFormatChanged(
    Format format,
    @Nullable DecoderReuseEvaluation decoderReuseEvaluation
)

Called when the format of the media being consumed by the renderer changes.

default void onVideoSizeChanged(VideoSize videoSize)

Called before a frame is rendered for the first time since setting the surface, and each time there's a change in the size, rotation or pixel aspect ratio of the video being rendered.