Function avcodec_flush_buffers

pub unsafe extern "C" fn avcodec_flush_buffers(
    avctx: *mut AVCodecContext,
)

Reset the internal codec state / flush internal buffers. Should be called e.g. when seeking or when switching to a different stream.

@note for decoders, this function just releases any references the decoder might keep internally, but the caller’s references remain valid.

@note for encoders, this function will only do something if the encoder declares support for AV_CODEC_CAP_ENCODER_FLUSH. When called, the encoder will drain any remaining packets, and can then be re-used for a different stream (as opposed to sending a null frame which will leave the encoder in a permanent EOF state after draining). This can be desirable if the cost of tearing down and replacing the encoder instance is high.