diff --git a/examples/audio_decode.go b/examples/audio_decode/main.go
similarity index 100%
rename from examples/audio_decode.go
rename to examples/audio_decode/main.go
diff --git a/examples/open_probe_file.go b/examples/open_probe_file.go
deleted file mode 100644
index 4960fdd..0000000
--- a/examples/open_probe_file.go
+++ /dev/null
@@ -1,39 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/nareix/joy4/av"
-	"github.com/nareix/joy4/av/avutil"
-	"github.com/nareix/joy4/format"
-)
-
-func init() {
-	format.RegisterAll()
-}
-
-func main() {
-	file, _ := avutil.Open("projectindex.flv")
-
-	streams, _ := file.Streams()
-	for _, stream := range streams {
-		if stream.Type().IsAudio() {
-			astream := stream.(av.AudioCodecData)
-			fmt.Println(astream.Type(), astream.SampleRate(), astream.SampleFormat(), astream.ChannelLayout())
-		} else if stream.Type().IsVideo() {
-			vstream := stream.(av.VideoCodecData)
-			fmt.Println(vstream.Type(), vstream.Width(), vstream.Height())
-		}
-	}
-
-	for i := 0; i < 10; i++ {
-		var pkt av.Packet
-		var err error
-		if pkt, err = file.ReadPacket(); err != nil {
-			break
-		}
-		fmt.Println("pkt", i, streams[pkt.Idx].Type(), "len", len(pkt.Data), "keyframe", pkt.IsKeyFrame)
-	}
-
-	file.Close()
-}
-
diff --git a/examples/rtmp_publish.go b/examples/rtmp_publish/main.go
similarity index 100%
rename from examples/rtmp_publish.go
rename to examples/rtmp_publish/main.go
diff --git a/examples/rtmp_server_channels.go b/examples/rtmp_server_channels/main.go
similarity index 100%
rename from examples/rtmp_server_channels.go
rename to examples/rtmp_server_channels/main.go
diff --git a/examples/rtmp_server_proxy.go b/examples/rtmp_server_proxy/main.go
similarity index 100%
rename from examples/rtmp_server_proxy.go
rename to examples/rtmp_server_proxy/main.go
diff --git a/examples/rtmp_server_conv_audio.go b/examples/rtmp_server_speex_to_aac/main.go
similarity index 100%
rename from examples/rtmp_server_conv_audio.go
rename to examples/rtmp_server_speex_to_aac/main.go
diff --git a/examples/transcode.go b/examples/transcode.go
deleted file mode 100644
index 2910119..0000000
--- a/examples/transcode.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package main
-
-import (
-	"github.com/nareix/joy4/av"
-	"github.com/nareix/joy4/av/transcode"
-	"github.com/nareix/joy4/format"
-	"github.com/nareix/joy4/av/avutil"
-	"github.com/nareix/joy4/cgo/ffmpeg"
-)
-
-// need ffmpeg with libfdkaac installed
-
-func init() {
-	format.RegisterAll()
-}
-
-func main() {
-	infile, _ := avutil.Open("speex.flv")
-
-	findcodec := func(stream av.AudioCodecData, i int) (need bool, dec av.AudioDecoder, enc av.AudioEncoder, err error) {
-		need = true
-		dec, _ = ffmpeg.NewAudioDecoder(stream)
-		enc, _ = ffmpeg.NewAudioEncoderByName("libfdk_aac")
-		enc.SetSampleRate(stream.SampleRate())
-		enc.SetChannelLayout(av.CH_STEREO)
-		enc.SetBitrate(12000)
-		enc.SetOption("profile", "HE-AACv2")
-		return
-	}
-
-	trans := &transcode.Demuxer{
-		Options: transcode.Options{
-			FindAudioDecoderEncoder: findcodec,
-		},
-		Demuxer: infile,
-	}
-
-	outfile, _ := avutil.Create("out.ts")
-	avutil.CopyFile(outfile, trans)
-
-	outfile.Close()
-	infile.Close()
-	trans.Close()
-}
-