astra/Vidio
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Added audio support for videos

Browse source
This commit is contained in:
Alex Eidt 2022-03-30 20:43:31 -07:00
parent 204ed5b1b5
commit b1fd41b75f
5 changed files with 132 additions and 65 deletions
Download patch file Download diff file Expand all files Collapse all files

26
README.md
View file

@ -1,6 +1,6 @@
# Vidio
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.
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.
@ -25,6 +25,7 @@ type Video struct {
duration float64 // Duration in seconds
fps float64 // Frames per second
codec string // Codec used to encode video
audio_codec string // Codec used for audio encoding
pix_fmt string // Pixel format video is stored in
framebuffer []byte // Raw frame data
pipe *io.ReadCloser // Stdout pipe for ffmpeg process
@ -43,7 +44,7 @@ for video.Read() {
## `Camera`
The `Camera` can read from any cameras on the device running Vidio. It takes in the stream index. On most machines the webcam device has index 0.
The `Camera` can read from any cameras on the device running Vidio. It takes in the stream index. On most machines the webcam device has index 0. Note that audio retrieval from the microphone is not yet supported.
```go
type Camera struct {
@ -84,21 +85,25 @@ type Options struct {
fps float64 // Frames per second. Default 25
quality float64 // If bitrate not given, use quality instead. Must be between 0 and 1. 0:best, 1:worst
codec string // Codec for video. Default libx264
audio string // File path for audio for the video. If no audio, audio=nil.
audio_codec string // Codec for audio. Default aac
}
```
```go
type VideoWriter struct {
filename string // Output video filename
filename string // Output filename
audio string // Audio filename.
width int // Frame width
height int // Frame height
bitrate int // Output video bitrate for encoding
bitrate int // Output video bitrate
loop int // Number of times for GIF to loop
delay int // Delay of final frame of GIF
macro int // macro size for determining how to resize frames for codecs
fps float64 // Frames per second for output video
quality float64 // Used if bitrate not given
codec string // Codec to encode video with
delay int // Delay of final frame of GIF. Default -1 (same delay as previous frame)
macro int // Macroblock size for determining how to resize frames for codecs
fps float64 // Frames per second for output video. Default 25
quality float64 // Used if bitrate not given. Default 0.5
codec string // Codec to encode video with. Default libx264
audio_codec string // Codec to encode audio with. Default aac
pipe *io.WriteCloser // Stdout pipe of ffmpeg process
cmd *exec.Cmd // ffmpeg command
}
@ -132,13 +137,14 @@ vidio.Write("output.jpg", w, h, img)
## Examples
Copy `input.mp4` to `output.mp4`.
Copy `input.mp4` to `output.mp4`. Copy the audio from `input.mp4` to `output.mp4` as well.
```go
video := vidio.NewVideo("input.mp4")
options := vidio.Options{
fps: video.fps,
bitrate: video.bitrate
audio: "input.mp4",
}
writer := vidio.NewVideoWriter("output.mp4", video.width, video.height, &options)