开源的H.264编解码器:OpenH264

jopen 6年前

OpenH264是一个编解码器,支持H.264编码和解码。它适合用在实时应用程序中,比如使用 WebRTC。

Ontop of this we built a recompression layer that can get additional win ontop of CAVLC and other algorithms.

Encoder Features

  • Constrained Baseline Profile up to Level 5.2 (4096x2304)
  • 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
  • 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 (4096x2304)
  • 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

OS Support

  • Windows 64-bit and 32-bit
  • Mac OS X 64-bit and 32-bit
  • Linux 64-bit and 32-bit
  • Android 64-bit and 32-bit
  • iOS 64-bit and 32-bit
  • Windows Phone 32-bit

Processor Support

  • Intel x86 optionally with MMX/SSE (no AVX yet, help is welcome)
  • ARMv7 optionally with NEON, AArch64 optionally with NEON
  • Any architecture using C/C++ fallback functions

项目主页:http://www.open-open.com/lib/view/home/1440929172340