Elecard Video Decoder

Elecard Video Decoder is a GStreamer plugin that serves as a wrapper over FFmpeg and supports MPEG-2 (ISO/IEC 13818-2), H.264/AVC (MPEG-4 Part 10, ISO/IEC 14496-10), and H.265/HEVC (ISO/IEC 23008-2 MPEG-H Part 2/ITU-T H.265) formats.

Features

Elecard Video Decoder has the following features:

  • Supports various color space standards;

  • Supports multiple chroma format conversion settings;

  • Supports two deinterlacing methods: the fast Bob algorithm and the Advanced space-time algorithm;

  • Enables precise adjustment of picture size and luminance.

Parameter Description

Below is the table describing Elecard Video Decoder parameters and their values.

Parameter Name

Description

Value Type

Available Values [range]

Default

Flags

colour-primaries

Specifies the standard of the color space in the video stream, which is required for correct display of colors on output devices.

Enum
0 — Unspecified
1 — BT.709
4 — FCC
5 — BT.601 PAL
6 — BT.601 NTSC
7 — SMPTE 240M
8 — Generic film
9 — BT.2020
10 — SMPTE 428
11 — SMPTE 431
12 — SMPTE 432
22 — EBU 3213

0

readable

crop-h

Specifies the picture cropping height. The positive value sets the cropping height, while the negative value sets the vertical offset relative to the right bottom corner of the source picture.

Integer

[-16384 – 16384]

0

readable, writable

crop-w

Specifies the picture cropping width. The positive value sets the cropping width, while the negative value sets the horizontal offset relative to the right bottom corner of the source picture.

Integer

[-16384 – 16384]

0

readable, writable

crop-x

Specifies the picture cropping parameters. Sets the top left corner coordinates (CropTop: x) relative to the source picture.

Integer

[0 – 16384]

0

readable, writable

crop-y

Specifies the picture cropping parameters. Sets the top left corner coordinates (CropLeft: y) relative to the source picture.

Integer

[0 – 16384]

0

readable, writable

csc

Specifies the chroma format conversion and bit depth setting.

Enum
0 — Auto
-1073739640 — YUV, 4:0:0, 8 bit
-1073731448 — YUV, 4:2:0, 8 bit
-1073723256 — YUV, 4:2:2, 8 bit
-1073715064 — YUV, 4:4:4, 8 bit
-1073731318 — YUV, 4:2:0, 10 bit
-1073723126 — YUV, 4:2:2, 10 bit
-1073714934 — YUV, 4:4:4, 10 bit
-1073600376 — YV12, 4:2:0, 8 bit
-1073469304 — NV12, 4:2:0, 8 bit
-1073338232 — NV21, 4:2:2, 8 bit
-939251446 — P010, 4:2:0, 10 bit
-1073198968 — YUY2, 4:2:2, 8 bit
-1073067896 — YVYU, 4:2:2, 8 bit
-1072936824 — UYVY, 4:2:2, 8 bit
-938981366 — Y210, 4:2:2, 10 bit
-1072674806 — V210, 4:2:2, 10 bit
-1071978360 — BGR, 8 bit
-1071716216 — BGR0, 8 bit
-1071650680 — BGRA, 8 bit
-1071519734 — A2R10G10B10, 10 bit

0

readable, writable

deinterlace

Specifies the deinterlacing operation mode. In the On mode, the deinterlacing is always enabled, in the Off mode — always disabled. In the Auto mode, the deinterlacing is applied only to interlaced frames.

Enum
0 — Off
1 — On
2 — Auto

0

readable, writable

deinterlace-method

Specifies the deinterlacing method. Available methods:

  • BOB — the fast Bob algorithm that vertically scales the original frame field to a complete frame;

  • Advanced — a high-quality space-time algorithm that uses adaptive algorithms to process each frame area.

Enum
1 — BOB
2 — Advanced

2

readable, writable

display-primaries-x0

Specifies the horizontal coordinate (x) for the red color component in the color primaries system. The value is used to describe the video color space according to the CIE 1931 system.

Integer

[0 – 65535]

0

readable

display-primaries-x1

Specifies the horizontal coordinate (x) for the green color component in the color primaries system. The value is used to describe the video color space according to the CIE 1931 system.

Integer

[0 – 65535]

0

readable

display-primaries-x2

Specifies the horizontal coordinate (x) for the blue color component in the color primaries system. The value is used to describe the video color space according to the CIE 1931 system.

Integer

[0 – 65535]

0

readable

display-primaries-y0

Specifies the vertical coordinate (y) for the red color component in the color primaries system. The value is used to describe the video color space according to the CIE 1931 system.

Integer

[0 – 65535]

0

readable

display-primaries-y1

Specifies the vertical coordinate (y) for the green color component in the color primaries system. The value is used to describe the video color space according to the CIE 1931 system.

Integer

[0 – 65535]

0

readable

display-primaries-y2

Specifies the vertical coordinate (y) for the blue color component in the color primaries system. The value is used to describe the video color space according to the CIE 1931 system.

Integer

[0 – 65535]

0

readable

double-rate

Enables or disables the frame rate doubling mode during deinterlacing by transforming each field into a complete frame.

Boolean

True, False

False

readable, writable

fps

Indicates the current FPS.

Double

[0 – 1.797693e+308]

0

readable

frames-decoded

Indicates the number of decoded frames.

Unsigned Integer64

[0 – 18446744073709551615]

0

readable

frc

Specifies the frame rate of the output bitstream.

Fraction

[0/1 – 2147483647/1]

0/1

readable, writable

full-range

Specifies whether the full range of levels is used for video display. The full range (0-255) can be found in PC screens and devices supporting the extended range; the limited range (16-235 for luma and 16-240 for chroma components) is used in the majority of television and broadcasting standards.

Boolean

True, False

False

readable

license-state

Indicates the license state.

String

evaluation

readable

matrix-coeffs

Specifies the transform matrix for encoding/decoding video color components (YUV ↔ RGB). The matrix determines how luminance (Y) and color differences (U, V) are transformed into color components (R, G, B) and back.

Enum
0 — Unspecified
1 — BT.709
2 — Identity
4 — FCC
5 — BT.601 PAL
6 — BT.601 NTSC
7 — SMPTE 240
8 — YCgCo
9 — BT.2020 NC
10 — BT.2020 C
11 — SMPTE 2085
12 — Chromaticity NC
13 — Chromaticity C
14 — BT.2100

0

readable

max-content-light-level

Specifies the maximum luminance level (in nits) for the brightest pixel within the entire piece of video content.

Integer

[0 – 65535]

0

readable

max-display-mastering-luminance

Specifies the maximum luminance (in nits) used to calibrate the display for content mastering.

Integer

[0 – 2147483647]

0

readable

max-pic-average-light-level

Specifies the maximum average luminance (in nits) in the picture in any frame of the content.

Integer

[0 – 2147483647]

0

readable

min-display-mastering-luminance

Specifies the minimum luminance (in nits) used to calibrate the display for content mastering.

Integer

[0 – 65535]

0

readable

name

Specifies the name of the object.

String

evdec0

readable, writable

num-threads

Specifies the number of threads the decoder will create to parallelize the decoding process. The upper range boundary depends on the number of logical CPUs on a given machine. If the value is set to 0, the decoder determines the number of threads automatically.

Unsigned Integer

[0 – CPU_COUNT]

0

readable, writable

resize-h

Specifies the output picture height. If changing picture height is not required, set the parameter to 0.

Integer

[0 – 16384]

0

readable, writable

resize-w

Specifies the output picture width. If changing picture width is not required, set the parameter to 0.

Integer

[0 – 16384]

0

readable, writable

resize-method

Specifies the image resize algorithm. Available options:

  • Bilinear filter — bilinear interpolation, a quick method;

  • Bicubic filter — bicubic interpolation that provides the optimal quality;

  • Lanczos filter x3 and x4 — the Lanczos filters with factor 3 and 4 provide the highest level of detail.

Enum
1 — Bilinear filter
2 — Bicubic filter
3 — Lanczos filter x3
4 — Lanczos filter x4

1

readable, writable

transfer-characteristics

Specifies the transfer function that determines how luminance (Luma) is transformed into signal levels. The method is used for correct display of luminance levels according to the chosen standard.

Enum
0 — Unspecified
1 — BT.709
4 — FCC
5 — BT.601 PAL
6 — BT.601 NTSC
7 — SMPTE 240
8 — Linear
9 — Logarithmic 100:1
10 — Logarithmic 100*Sqrt(10):1
11 — IEC 61966-2-4
12 — BT.1361
13 — IEC 61966-2-1
14 — BT.2020 (10 bit)
15 — BT.2020 (12 bit)
16 — SMPTE 2084 (PQ)
17 — SMPTE 428
18 — BT.2100 (HLG)

0

readable

video-format

Specifies the stream video format.

Enum
0 — Unspecified
1 — PAL
2 — NTSC
3 — SECAM
4 — MAC
5 — Component

0

readable

white-point-x

Specifies the horizontal coordinate (x) of the white point in the CIE 1931 color space.

Integer

[0 – 65535]

0

readable

white-point-y

Specifies the vertical coordinate (y) of the white point in the CIE 1931 color space.

Integer

[0 – 65535]

0

readable