video¶
this module provides the video codec interface. Encoders, Decoders and their support code.
- class pyrana.video.Decoder(input_codec, params=None)¶
Decodes video Packets into video Frames.
- classmethod from_cdata(ctx)¶
builds a pyrana Video Decoder from (around) a (cffi-wrapped) libav* (video)decoder object. The libav object must be already initialized and ready to go. WARNING: raw access. Use with care.
- static wire(dec)¶
wire up the Decoder. See codec.wire_decoder
- class pyrana.video.Encoder(output_codec, params)¶
Encode video Frames into Packets.
- classmethod from_cdata(ctx, params, codec=None)¶
builds a pyrana video Encoder from (around) a (cffi-wrapped) liabv* (audio) context. WARNING: raw access. Use with care.
- static wire(enc)¶
wire up the Encoder. See codec.wire_encoder
- class pyrana.video.Frame(width, height, pixfmt)¶
A Video frame.
- asr¶
The sample aspect ratio of the frame.
- coded_pict_number¶
Picture number in bitstream order.
- display_pict_number¶
Picture number in display order.
- image(pixfmt=None)¶
Returns a new Image object which provides access to the Picture (thus the pixel as bytes()) data.
- is_interlaced¶
Is the content of the picture interlaced?
- pict_type¶
Picture type of the frame, see AVPictureType.
- top_field_first¶
If is_interlaced(), is top field displayed first?
- class pyrana.video.Image¶
Represents the Picture data inside a Frame.
- blob()¶
returns the bytes() dump of the object.
- convert(pixfmt)¶
convert the Image data in a new PixelFormat. returns a brand new, independent Image.
- classmethod from_cdata(ppframe, sws=None, parent=None)¶
builds a pyrana Image from a (cffi-wrapped) libav* Frame object. The Picture data itself will still be hold in the Frame object. The libav object must be already initialized and ready to go. WARNING: raw access. Use with care.
- height¶
Frame height. Expected to be always equal to the stream height.
Is the underlying C-Frame shared with the parent py-Frame?
- pixel_format¶
Frame pixel format. Expected to be always equal to the stream pixel format.
- plane(idx)¶
Read-only byte access to a single plane of the Image.
- planes¶
Return the number of planes in the Picture data. e.g. RGB: 1; YUV420: 3
- width¶
Frame width. Expected to be always equal to the stream width.
- class pyrana.video.SWSMode¶
SWS operational flags. This wasn’t a proper enum, rather a collection of #defines, and that’s the reason why it is defined here.
- pyrana.video.fill_yuv420p(frame, i)¶
fill a video frame with a test pattern.