Video

Video Streams

class av.video.stream.VideoStream

Bases: av.stream.Stream

average_rate

The average frame rate of this video stream.

This is calculated when the file is opened by looking at the first few frames and averaging their rate.

Type

Fraction or None

Video Codecs

class av.video.codeccontext.VideoCodecContext

Bases: av.codec.context.CodecContext

coded_height

coded_width

display_aspect_ratio

encoded_frame_count

format

framerate

The frame rate, in frames per second.

Type

fractions.Fraction

gop_size

has_b_frames

height

pix_fmt

rate

Another name for framerate.

reformatter

sample_aspect_ratio

width

Video Formats

class av.video.format.VideoFormat

Bases: object

>>> format = VideoFormat('rgb24')
>>> format.name
'rgb24'

bits_per_pixel

chroma_height(luma_height=0)

Height of a chroma plane relative to a luma plane.

Parameters

luma_height (int) – Height of the luma plane; defaults to self.height.

chroma_width(luma_width=0)

Width of a chroma plane relative to a luma plane.

Parameters

luma_width (int) – Width of the luma plane; defaults to self.width.

components

has_palette

Pixel format has a palette in data[1], values are indexes in this palette.

height

is_big_endian

Pixel format is big-endian.

is_bit_stream

All values of a component are bit-wise packed end to end.

is_planar

At least one pixel component is not in the first data plane.

is_rgb

The pixel format contains RGB-like data (as opposed to YUV/grayscale).

name

Canonical name of the pixel format.

padded_bits_per_pixel

width

class av.video.format.VideoFormatComponent

Bases: object

bits

Number of bits in the component.

height

The height of this component’s plane.

Requires the parent VideoFormat to have a height.

index

is_alpha

Is this component an alpha channel?

is_chroma

Is this component a chroma channel?

is_luma

Is this compoment a luma channel?

plane

The index of the plane which contains this component.

width

The width of this component’s plane.

Requires the parent VideoFormat to have a width.

Video Frames

class av.video.frame.VideoFrame

Bases: av.frame.Frame

A single video frame.

Parameters

• width (int) – The width of the frame.

• height (int) – The height of the frame.

• format (VideoFormat or str.) – The format of the frame.

>>> frame = VideoFrame(1920, 1080, 'rgb24')

Structural

VideoFrame.width

Width of the image, in pixels.

VideoFrame.height

Height of the image, in pixels.

VideoFrame.format

The VideoFormat of the frame.

VideoFrame.planes

A tuple of VideoPlane objects.

Types

VideoFrame.key_frame

Is this frame a key frame?

Wraps AVFrame.key_frame.

VideoFrame.interlaced_frame

Is this frame an interlaced or progressive?

Wraps AVFrame.interlaced_frame.

VideoFrame.pict_type

One of PictureType.

Wraps AVFrame.pict_type.

class av.video.frame.PictureType

Bases: av.enum.EnumItem

Wraps AVPictureType (AV_PICTURE_TYPE_*).

PictureType Name	Flag Value	Meaning in FFmpeg
NONE	0x0	Undefined
I	0x1	Intra
P	0x2	Predicted
B	0x3	Bi-directional predicted
S	0x4	S(GMC)-VOP MPEG-4
SI	0x5	Switching intra
SP	0x6	Switching predicted
BI	0x7	BI type

Conversions

VideoFrame.reformat(width=None, height=None, format=None, src_colorspace=None, dst_colorspace=None, interpolation=None)

Create a new VideoFrame with the given width/height/format/colorspace.

See also

VideoReformatter.reformat() for arguments.

VideoFrame.to_rgb(**kwargs)

Get an RGB version of this frame.

Any **kwargs are passed to VideoReformatter.reformat().

>>> frame = VideoFrame(1920, 1080)
>>> frame.format.name
'yuv420p'
>>> frame.to_rgb().format.name
'rgb24'

VideoFrame.to_image(**kwargs)

Get an RGB PIL.Image of this frame.

Any **kwargs are passed to VideoReformatter.reformat().

Note

PIL or Pillow must be installed.

VideoFrame.to_ndarray(**kwargs)

Get a numpy array of this frame.

Any **kwargs are passed to VideoReformatter.reformat().

Note

Numpy must be installed.

static VideoFrame.from_image(img)

Construct a frame from a PIL.Image.

static VideoFrame.from_ndarray(array, format='rgb24')

Construct a frame from a numpy array.

Video Planes

class av.video.plane.VideoPlane

Bases: av.plane.Plane

buffer_size

The size of the buffer in bytes.

height

Pixel height of this plane.

line_size

Bytes per horizontal line in this plane.

Type

int

width

Pixel width of this plane.

Video Reformatters

class av.video.reformatter.VideoReformatter

Bases: object

An object for reformatting size and pixel format of VideoFrame.

It is most efficient to have a reformatter object for each set of parameters you will use as calling reformat() will reconfigure the internal object.

reformat(VideoFrame frame, width=None, height=None, format=None, src_colorspace=None, dst_colorspace=None, interpolation=None)

Create a new VideoFrame with the given width/height/format/colorspace.

Returns the same frame untouched if nothing needs to be done to it.

Parameters

• width (int) – New width, or None for the same width.

• height (int) – New height, or None for the same height.

• format (VideoFormat or str) – New format, or None for the same format.

• src_colorspace (Colorspace or str) – Current colorspace, or None for DEFAULT.

• dst_colorspace (Colorspace or str) – Desired colorspace, or None for DEFAULT.

• interpolation (Interpolation or str) – The interpolation method to use, or None for BILINEAR.

Enums

class av.video.reformatter.Interpolation

Bases: av.enum.EnumItem

Wraps the SWS_* flags.

Interpolation Name	Flag Value	Meaning in FFmpeg
FAST_BILINEAR	0x1	Fast bilinear
BILINEAR	0x2	Bilinear
BICUBIC	0x4	Bicubic
X	0x8	Experimental
POINT	0x10	Nearest neighbor / point
AREA	0x20	Area averaging
BICUBLIN	0x40	Luma bicubic / chroma bilinear
GAUSS	0x80	Gaussian
SINC	0x100	Sinc
LANCZOS	0x200	Lanczos
SPLINE	0x400	Bicubic spline

class av.video.reformatter.Colorspace

Bases: av.enum.EnumItem

Wraps the SWS_CS_* flags. There is a bit of overlap in these names which comes from FFmpeg and backards compatibility.

Colorspace Name	Flag Value	Meaning in FFmpeg
ITU709	0x1	-
FCC	0x4	-
ITU601	0x5	-
ITU624	0x5	-
SMPTE170M	0x5	-
SMPTE240M	0x7	-
DEFAULT	0x5	-
smpte240	0x7	-