astra/Vidio
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rgb to rgba

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Alex Eidt 2022-09-19 20:41:07 -07:00
parent 2f07344cb8
commit f6eaee9f1f
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README.md
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@ -2,7 +2,7 @@
A simple Video I/O library written in Go. This library relies on [FFmpeg](https://www.ffmpeg.org/), and [FFProbe](https://www.ffmpeg.org/) which must be downloaded before usage and added to the system path.
All frames are encoded and decoded in 8-bit RGB format.
All frames are encoded and decoded in 8-bit RGBA format.
For Audio I/O using FFmpeg, see the [`aio`](https://github.com/AlexEidt/aio) project.
@ -16,7 +16,7 @@ go get github.com/AlexEidt/Vidio
The `Video` struct stores data about a video file you give it. The code below shows an example of sequentially reading the frames of the given video.
Calling the `Read()` function will fill in the `Video` struct `framebuffer` with the next frame data as 8-bit RGB data, stored in a flattened byte array in row-major order where each pixel is represented by three consecutive bytes representing the R, G and B component of that pixel.
Calling the `Read()` function will fill in the `Video` struct `framebuffer` with the next frame data as 8-bit RGBA data, stored in a flattened byte array in row-major order where each pixel is represented by four consecutive bytes representing the R, G, B and A components of that pixel. Note that the A (alpha) component will always be 255.
```go
vidio.NewVideo(filename string) (*vidio.Video, error)
@ -81,7 +81,6 @@ Macro() int
FPS() float64
Quality() float64
Codec() string
Format() string
Write(frame []byte) error
Close()
@ -96,7 +95,6 @@ type Options struct {
FPS float64 // Frames per second for output video.
Quality float64 // If bitrate not given, use quality instead. Must be between 0 and 1. 0:best, 1:worst.
Codec string // Codec for video.
Format string // Pixel Format for video. Default "rgb24".
StreamFile string // File path for extra stream data.
}
```