46 lines
968 B
Go
46 lines
968 B
Go
package main
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import (
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"github.com/nareix/joy4/av"
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"github.com/nareix/joy4/av/transcode"
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"github.com/nareix/joy4/format"
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"github.com/nareix/joy4/av/avutil"
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"github.com/nareix/joy4/cgo/ffmpeg"
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)
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// need ffmpeg with libfdkaac installed
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func init() {
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format.RegisterAll()
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}
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func main() {
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infile, _ := avutil.Open("speex.flv")
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findcodec := func(stream av.AudioCodecData, i int) (need bool, dec av.AudioDecoder, enc av.AudioEncoder, err error) {
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need = true
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dec, _ = ffmpeg.NewAudioDecoder(stream)
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enc, _ = ffmpeg.NewAudioEncoderByName("libfdk_aac")
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enc.SetSampleRate(stream.SampleRate())
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enc.SetChannelLayout(av.CH_STEREO)
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enc.SetBitrate(12000)
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enc.SetOption("profile", "HE-AACv2")
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return
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}
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trans := &transcode.Demuxer{
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Options: transcode.Options{
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FindAudioDecoderEncoder: findcodec,
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},
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Demuxer: infile,
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}
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outfile, _ := avutil.Create("out.ts")
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avutil.CopyFile(outfile, trans)
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outfile.Close()
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infile.Close()
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trans.Close()
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}
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