Glossary#

The oneVPL API and documentation uses a standard set of acronyms and terms. This section describes these conventions.

Acronyms and Terms#

AVC#

Advanced video codec (same as H.264 and MPEG-4, part 10).

BRC#

Bit rate control.

CQP#

Constant quantization parameter.

DRM#

Digital rights management.

DXVA2#

Microsoft DirectX* Video Acceleration standard 2.0.

GOP#

Group of pictures. In video coding, a group of frames in a specific order. In the H.264 standard, a group of I-frames, B-frames and P-frames.

GPB#

Generalized P/B picture. B-picture, containing only forward references in both L0 and L1.

H.264#

Video coding standard. See ISO*/IEC* 14496-10 and ITU-T* H.264, MPEG-4 Part 10, Advanced Video Coding, May 2005.

HDR#

High dynamic range.

HRD#

Hypothetical reference decoder, a term used in the H.264 specification.

IDR#

Instantaneous decoding fresh picture, a term used in the H.264 specification.

LA#

Look ahead. Special encoding mode where encoder performs pre-analysis of several frames before actual encoding starts.

MCTF#

Motion compensated temporal filter. Special type of noise reduction filter which utilizes motion to improve efficiency of video denoising.

NAL#

Network abstraction layer.

PPS#

Picture parameter set.

QP#

Quantization parameter.

SEI#

Supplemental enhancement information.

SPS#

Sequence parameter set.

VA API#

Video acceleration API.

VBR#

Variable bit rate.

VBV#

Video buffering verifier.

Video memory#

Memory used by a hardware acceleration device, also known as GPU, to hold frame and other types of video data.

VUI#

Video usability information.

Video Formats#

MPEG#

Moving Picture Experts Group video file.

MPEG-2#

Moving Picture Experts Group video file. See ISO/IEC 13818-2 and ITU-T H.262, MPEG-2 Part 2, Information Technology- Generic Coding of Moving Pictures and Associate Audio Information: Video, 2000.

NV12#

YUV 4:2:0 video format, 12 bits per pixel.

NV16#

YUV 4:2:2 video format, 16 bits per pixel.

P010#

YUV 4:2:0 video format, extends NV12, 10 bits per pixel.

P210#

YUV 4:2:2 video format, 10 bits per pixel.

UYVY#

YUV 4:2:2 video format, 16 bits per pixel.

VC-1#

Video coding format. See SMPTE* 421M, SMPTE Standard for Television: VC-1 Compressed Video Bitstream Format and Decoding Process, August 2005.

Color Formats#

I010#

Color format for raw video frames, extends IYUV/I420 for 10 bit.

IYUV#

A color format for raw video frames, also known as I420.

RGB32#

Thirty-two-bit RGB color format.

RGB4#

Thirty-two-bit RGB color format. Also known as RGB32.

YUY2#

A color format for raw video frames.

YV12#

A color format for raw video frames, similar to IYUV with U and V reversed.