Baseline h.264 encoder. Supported standard features:

• YUV 4:2:0 colorspace support
• I and P slices
• I_4x4, I_16x16, P_L0, P_SKIP macroblock types
• full-pel, half-pel and quarter-pel motion estimation
• unrestricted motion vectors
• multiple reference frames
• in-loop deblocking filter

Encoder features:

• adaptive I/P slice decision with adjustable max. keyframe interval
• fixed QP or 2-pass average bitrate coding mode
• tunable motion estimation quality (subpixel ME refinement, reference frame count)
• tunable macroblock type decision quality
• assembly optimizations (x86/x64 MMX/SSE2)
• multithreaded deblocking

Accepted input file types:

• raw YUV 4:2:0 (width and height requied)
• YUV4MPEG 4:2:0 (*.y4m)
• Avisynth script (*.avs, Windows only)

Windows and Linux are supported. Requirements:

• yasm 1.2.0 and later to compile the assembly files
• Lazarus with Freepascal 3.0.x or later