mpeg
Package mpeg provides an implementation of an experimental
pure golang implementation of an MPEG-2 decoder. It
is intended as an educational look at some of the patterns and
algorithms involved in the ubiquitous technology of video
compression/decompression.
This package is experimental and is not intended for
use in production environments.
Composition
This library is split into four sub-packages:
mpeg/tsfor parsing and processing MPEG-2 Transport Streamsmpeg/psfor parsing and processing MPEG-2 Program Streamsmpeg/pesfor parsing and processing MPEG-2 Packetized Elementary Streamsmpeg/videofor decoding MPEG-2 Video
Examples
Give it a spin!
go get -d github.com/32bitkid/mpeg
Decode a frame of video from a MPEG-2 TS and save it as a png
package main
import "os"
import "image/png"
import "github.com/32bitkid/mpeg/ts"
import "github.com/32bitkid/mpeg/pes"
import "github.com/32bitkid/mpeg/video"
func main() {
// Open the file
tsReader, err := os.Open("source.ts")
// Decode PID 0x21 from the TS stream
pesReader := ts.NewPayloadUnitReader(tsReader, ts.IsPID(0x21))
// Decode the PES stream
esReader := pes.NewPayloadReader(pesReader)
// Decode the ES into a stream of frames
v := video.NewVideoSequence(esReader)
// Align to next sequence start/entry point
v.AlignTo(video.SequenceHeaderStartCode)
// get the next frame
frame, _ = v.Next()
file, _ := os.Create("output.png")
png.Encode(file, frame)
}