openh264

Description

OpenH264 is a codec library which supports H.264 encoding and decoding. It is suitable for use in real time applications such as WebRTC.

Encoder Features: * Constrained Baseline Profile up to Level 5.2 (Max frame size is 36864 macro-blocks) * Arbitrary resolution, not constrained to multiples of 16x16 * Rate control with adaptive quantization, or constant quantization * Slice options: 1 slice per frame, N slices per frame, N macroblocks per slice, or N bytes per slice * Multiple threads automatically used for multiple slices * Temporal scalability up to 4 layers in a dyadic hierarchy * Simulcast AVC up to 4 resolutions from a single input * Spatial simulcast up to 4 resolutions from a single input * Long Term Reference (LTR) frames * Memory Management Control Operation (MMCO) * Reference picture list modification * Single reference frame for inter prediction * Multiple reference frames when using LTR and/or 3-4 temporal layers * Periodic and on-demand Instantaneous Decoder Refresh (IDR) frame insertion * Dynamic changes to bit rate, frame rate, and resolution * Annex B byte stream output * YUV 4:2:0 planar input

Decoder Features: * Constrained Baseline Profile up to Level 5.2 (Max frame size is 36864 macro-blocks) * Arbitrary resolution, not constrained to multiples of 16x16 * Single thread for all slices * Long Term Reference (LTR) frames * Memory Management Control Operation (MMCO) * Reference picture list modification * Multiple reference frames when specified in Sequence Parameter Set (SPS) * Annex B byte stream input * YUV 4:2:0 planar output