Add parser for ffmpeg and HLS stream mapping

ffmpeg/parse/parser.go

@@ -204,7 +204,9 @@ func (p *parser) Parse(line string) uint64 {
 	isDefaultProgress := strings.HasPrefix(line, "frame=")
 	isFFmpegInputs := strings.HasPrefix(line, "ffmpeg.inputs:")
 	isFFmpegOutputs := strings.HasPrefix(line, "ffmpeg.outputs:")
+	isFFmpegMapping := strings.HasPrefix(line, "ffmpeg.mapping:")
 	isFFmpegProgress := strings.HasPrefix(line, "ffmpeg.progress:")
+	isHLSStreamMap := strings.HasPrefix(line, "hls.streammap:")
 	isAVstreamProgress := strings.HasPrefix(line, "avstream.progress:")
 
 	p.lock.log.Lock()
@@ -233,7 +235,7 @@ func (p *parser) Parse(line string) uint64 {
 		}
 
 		if isFFmpegInputs {
-			if err := p.parseIO("input", strings.TrimPrefix(line, "ffmpeg.inputs:")); err != nil {
+			if err := p.parseFFmpegIO("input", strings.TrimPrefix(line, "ffmpeg.inputs:")); err != nil {
 				p.logger.WithFields(log.Fields{
 					"line":  line,
 					"error": err,
@@ -243,8 +245,17 @@ func (p *parser) Parse(line string) uint64 {
 			return 0
 		}
 
+		if isHLSStreamMap {
+			if err := p.parseHLSStreamMap(strings.TrimPrefix(line, "hls.streammap:")); err != nil {
+				p.logger.WithFields(log.Fields{
+					"line":  line,
+					"error": err,
+				}).Error().Log("Failed parsing HSL stream mapping")
+			}
+		}
+
 		if isFFmpegOutputs {
-			if err := p.parseIO("output", strings.TrimPrefix(line, "ffmpeg.outputs:")); err != nil {
+			if err := p.parseFFmpegIO("output", strings.TrimPrefix(line, "ffmpeg.outputs:")); err != nil {
 				p.logger.WithFields(log.Fields{
 					"line":  line,
 					"error": err,
@@ -273,6 +284,17 @@ func (p *parser) Parse(line string) uint64 {
 		}
 	}
 
+	if isFFmpegMapping {
+		if err := p.parseFFmpegMapping(strings.TrimPrefix(line, "ffmpeg.mapping:")); err != nil {
+			p.logger.WithFields(log.Fields{
+				"line":  line,
+				"error": err,
+			}).Error().Log("Failed parsing mapping")
+		}
+
+		return 0
+	}
+
 	if !isDefaultProgress && !isFFmpegProgress && !isAVstreamProgress {
 		// Write the current non-progress line to the log
 		p.addLog(line)
@@ -491,7 +513,7 @@ func (p *parser) parseDefaultProgress(line string) error {
 	return nil
 }
 
-func (p *parser) parseIO(kind, line string) error {
+func (p *parser) parseFFmpegIO(kind, line string) error {
 	processIO := []ffmpegProcessIO{}
 
 	err := json.Unmarshal([]byte(line), &processIO)
@@ -518,6 +540,32 @@ func (p *parser) parseIO(kind, line string) error {
 	return nil
 }
 
+func (p *parser) parseFFmpegMapping(line string) error {
+	mapping := ffmpegStreamMapping{}
+
+	err := json.Unmarshal([]byte(line), &mapping)
+	if err != nil {
+		return err
+	}
+
+	p.process.mapping = mapping
+
+	return nil
+}
+
+func (p *parser) parseHLSStreamMap(line string) error {
+	mapping := ffmpegHLSStreamMap{}
+
+	err := json.Unmarshal([]byte(line), &mapping)
+	if err != nil {
+		return err
+	}
+
+	p.process.hlsMapping = &mapping
+
+	return nil
+}
+
 func (p *parser) parseFFmpegProgress(line string) error {
 	progress := ffmpegProgress{}
 

ffmpeg/parse/parser_test.go

@@ -922,6 +922,165 @@ func TestParserProgressPlayout(t *testing.T) {
 	}, progress)
 }
 
+func TestParserStreamMapping(t *testing.T) {
+	parser := New(Config{
+		LogLines: 20,
+	}).(*parser)
+
+	parser.Parse(`ffmpeg.inputs:[{"url":"https://cdn.livespotting.com/vpu/e9slfpe3/z60wzayk_720.m3u8","format":"hls","index":0,"stream":0,"type":"video","codec":"h264","coder":"h264","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":1280,"height":720},{"url":"https://cdn.livespotting.com/vpu/e9slfpe3/z60wzayk_1440.m3u8","format":"hls","index":1,"stream":0,"type":"video","codec":"h264","coder":"h264","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":2560,"height":1440},{"url":"anullsrc=r=44100:cl=mono","format":"lavfi","index":2,"stream":0,"type":"audio","codec":"pcm_u8","coder":"pcm_u8","bitrate_kbps":352,"duration_sec":0.000000,"language":"und","sampling_hz":44100,"layout":"mono","channels":1}]`)
+	parser.Parse(`hls.streammap:{"address":"http://127.0.0.1:8080/memfs/live/%v.m3u8","variants":[{"variant":0,"address":"http://127.0.0.1:8080/memfs/live/0.m3u8","streams":[0,2]},{"variant":1,"address":"http://127.0.0.1:8080/memfs/live/1.m3u8","streams":[1,3]}]}`)
+	parser.Parse(`ffmpeg.outputs:[{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":0,"type":"video","codec":"h264","coder":"copy","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":1280,"height":720},{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":1,"type":"video","codec":"h264","coder":"copy","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":2560,"height":1440},{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":2,"type":"audio","codec":"aac","coder":"aac","bitrate_kbps":69,"duration_sec":0.000000,"language":"und","sampling_hz":44100,"layout":"mono","channels":1},{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":3,"type":"audio","codec":"aac","coder":"aac","bitrate_kbps":69,"duration_sec":0.000000,"language":"und","sampling_hz":44100,"layout":"mono","channels":1}]`)
+	parser.Parse(`ffmpeg.mapping:{"graphs":[{"index":0,"graph":[{"src_name":"Parsed_null_0","src_filter":"null","dst_name":"format","dst_filter":"format","inpad":"default","outpad":"default","timebase": "1/90000","type":"video","format":"yuvj420p","width":1280,"height":720},{"src_name":"graph 0 input from stream 0:0","src_filter":"buffer","dst_name":"Parsed_null_0","dst_filter":"null","inpad":"default","outpad":"default","timebase": "1/90000","type":"video","format":"yuvj420p","width":1280,"height":720},{"src_name":"format","src_filter":"format","dst_name":"out_0_0","dst_filter":"buffersink","inpad":"default","outpad":"default","timebase": "1/90000","type":"video","format":"yuvj420p","width":1280,"height":720}]},{"index":1,"graph":[{"src_name":"Parsed_anull_0","src_filter":"anull","dst_name":"auto_aresample_0","dst_filter":"aresample","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"u8","sampling_hz":44100,"layout":"mono"},{"src_name":"graph_1_in_2_0","src_filter":"abuffer","dst_name":"Parsed_anull_0","dst_filter":"anull","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"u8","sampling_hz":44100,"layout":"mono"},{"src_name":"format_out_0_2","src_filter":"aformat","dst_name":"out_0_2","dst_filter":"abuffersink","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"fltp","sampling_hz":44100,"layout":"mono"},{"src_name":"auto_aresample_0","src_filter":"aresample","dst_name":"format_out_0_2","dst_filter":"aformat","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"fltp","sampling_hz":44100,"layout":"mono"}]},{"index":2,"graph":[{"src_name":"Parsed_anull_0","src_filter":"anull","dst_name":"auto_aresample_0","dst_filter":"aresample","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"u8","sampling_hz":44100,"layout":"mono"},{"src_name":"graph_2_in_2_0","src_filter":"abuffer","dst_name":"Parsed_anull_0","dst_filter":"anull","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"u8","sampling_hz":44100,"layout":"mono"},{"src_name":"format_out_0_3","src_filter":"aformat","dst_name":"out_0_3","dst_filter":"abuffersink","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"fltp","sampling_hz":44100,"layout":"mono"},{"src_name":"auto_aresample_0","src_filter":"aresample","dst_name":"format_out_0_3","dst_filter":"aformat","inpad":"default","outpad":"default","timebase": "1/44100","type":"audio","format":"fltp","sampling_hz":44100,"layout":"mono"}]}],"mapping":[{"input":{"index":0,"stream":0},"graph":{"index":0,"name":"graph 0 input from stream 0:0"},"output":null},{"input":{"index":2,"stream":0},"graph":{"index":1,"name":"graph_1_in_2_0"},"output":null},{"input":{"index":2,"stream":0},"graph":{"index":2,"name":"graph_2_in_2_0"},"output":null},{"input":null,"graph":{"index":0,"name":"out_0_0"},"output":{"index":0,"stream":0}},{"input":{"index":1,"stream":0},"output":{"index":0,"stream":1},"copy":true},{"input":null,"graph":{"index":1,"name":"out_0_2"},"output":{"index":0,"stream":2}},{"input":null,"graph":{"index":2,"name":"out_0_3"},"output":{"index":0,"stream":3}}]}`)
+	parser.Parse(`ffmpeg.progress:{"inputs":[{"index":0,"stream":0,"framerate":{"min":24.975,"max":24.975,"avg":24.975},"frame":149,"keyframe":3,"packet":149,"size_kb":1467,"size_bytes":1501854},{"index":1,"stream":0,"framerate":{"min":24.975,"max":24.975,"avg":24.975},"frame":149,"keyframe":3,"packet":149,"size_kb":4428,"size_bytes":4534541},{"index":2,"stream":0,"framerate":{"min":43.066,"max":43.068,"avg":43.066},"frame":257,"keyframe":257,"packet":257,"size_kb":257,"size_bytes":263168}],"outputs":[{"index":0,"stream":0,"frame":149,"keyframe":3,"packet":149,"q":-1.0,"size_kb":1467,"size_bytes":1501923,"extradata_size_bytes":69},{"index":0,"stream":1,"frame":149,"keyframe":3,"packet":149,"q":-1.0,"size_kb":4428,"size_bytes":4534612,"extradata_size_bytes":71},{"index":0,"stream":2,"frame":257,"keyframe":256,"packet":256,"size_kb":1,"size_bytes":1046,"extradata_size_bytes":5},{"index":0,"stream":3,"frame":257,"keyframe":256,"packet":256,"size_kb":1,"size_bytes":1046,"extradata_size_bytes":5}],"frame":149,"packet":149,"q":-1.0,"size_kb":5897,"size_bytes":6038627,"time":"0h0m5.96s","speed":4.79,"dup":0,"drop":0}`)
+
+	progress := parser.Progress()
+
+	require.Equal(t, 3, len(progress.Input))
+	require.Equal(t, 4, len(progress.Output))
+
+	require.Equal(t, StreamMapping{
+		Graphs: []Graph{
+			{
+				Index: 0,
+				Graph: []GraphElement{
+					{SrcName: "Parsed_null_0", SrcFilter: "null", DstName: "format", DstFilter: "format", Inpad: "default", Outpad: "default", Timebase: "1/90000", Type: "video", Format: "yuvj420p", Sampling: 0, Layout: "", Width: 1280, Height: 720},
+					{SrcName: "graph 0 input from stream 0:0", SrcFilter: "buffer", DstName: "Parsed_null_0", DstFilter: "null", Inpad: "default", Outpad: "default", Timebase: "1/90000", Type: "video", Format: "yuvj420p", Sampling: 0, Layout: "", Width: 1280, Height: 720},
+					{SrcName: "format", SrcFilter: "format", DstName: "out_0_0", DstFilter: "buffersink", Inpad: "default", Outpad: "default", Timebase: "1/90000", Type: "video", Format: "yuvj420p", Sampling: 0, Layout: "", Width: 1280, Height: 720},
+				},
+			}, {
+				Index: 1,
+				Graph: []GraphElement{
+					{SrcName: "Parsed_anull_0", SrcFilter: "anull", DstName: "auto_aresample_0", DstFilter: "aresample", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "u8", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+					{SrcName: "graph_1_in_2_0", SrcFilter: "abuffer", DstName: "Parsed_anull_0", DstFilter: "anull", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "u8", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+					{SrcName: "format_out_0_2", SrcFilter: "aformat", DstName: "out_0_2", DstFilter: "abuffersink", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "fltp", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+					{SrcName: "auto_aresample_0", SrcFilter: "aresample", DstName: "format_out_0_2", DstFilter: "aformat", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "fltp", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+				},
+			}, {
+				Index: 2,
+				Graph: []GraphElement{
+					{SrcName: "Parsed_anull_0", SrcFilter: "anull", DstName: "auto_aresample_0", DstFilter: "aresample", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "u8", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+					{SrcName: "graph_2_in_2_0", SrcFilter: "abuffer", DstName: "Parsed_anull_0", DstFilter: "anull", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "u8", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+					{SrcName: "format_out_0_3", SrcFilter: "aformat", DstName: "out_0_3", DstFilter: "abuffersink", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "fltp", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+					{SrcName: "auto_aresample_0", SrcFilter: "aresample", DstName: "format_out_0_3", DstFilter: "aformat", Inpad: "default", Outpad: "default", Timebase: "1/44100", Type: "audio", Format: "fltp", Sampling: 44100, Layout: "mono", Width: 0, Height: 0},
+				},
+			},
+		},
+		Mapping: []Mapping{
+			{
+				Input:  0,
+				Output: -1,
+				Graph: MappingGraph{
+					Index: 0,
+					Name:  "graph 0 input from stream 0:0",
+				},
+				Copy: false,
+			},
+			{
+				Input:  2,
+				Output: -1,
+				Graph: MappingGraph{
+					Index: 1,
+					Name:  "graph_1_in_2_0",
+				},
+				Copy: false,
+			},
+			{
+				Input:  2,
+				Output: -1,
+				Graph: MappingGraph{
+					Index: 2,
+					Name:  "graph_2_in_2_0",
+				},
+				Copy: false,
+			},
+			{
+				Input:  -1,
+				Output: 0,
+				Graph: MappingGraph{
+					Index: 0,
+					Name:  "out_0_0",
+				},
+				Copy: false,
+			},
+			{
+				Input:  1,
+				Output: 1,
+				Graph: MappingGraph{
+					Index: -1,
+					Name:  "",
+				},
+				Copy: true,
+			},
+			{
+				Input:  -1,
+				Output: 2,
+				Graph: MappingGraph{
+					Index: 1,
+					Name:  "out_0_2",
+				},
+				Copy: false,
+			},
+			{
+				Input:  -1,
+				Output: 3,
+				Graph: MappingGraph{
+					Index: 2,
+					Name:  "out_0_3",
+				},
+				Copy: false,
+			},
+		},
+	}, progress.Mapping)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/0.m3u8", progress.Output[0].Address)
+	require.Equal(t, uint64(0), progress.Output[0].Index)
+	require.Equal(t, uint64(0), progress.Output[0].Stream)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/1.m3u8", progress.Output[1].Address)
+	require.Equal(t, uint64(1), progress.Output[1].Index)
+	require.Equal(t, uint64(0), progress.Output[1].Stream)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/0.m3u8", progress.Output[2].Address)
+	require.Equal(t, uint64(0), progress.Output[2].Index)
+	require.Equal(t, uint64(1), progress.Output[2].Stream)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/1.m3u8", progress.Output[3].Address)
+	require.Equal(t, uint64(1), progress.Output[3].Index)
+	require.Equal(t, uint64(1), progress.Output[3].Stream)
+}
+
+func TestParserHLSMapping(t *testing.T) {
+	parser := New(Config{
+		LogLines: 20,
+	}).(*parser)
+
+	parser.Parse(`ffmpeg.inputs:[{"url":"https://cdn.livespotting.com/vpu/e9slfpe3/z60wzayk_720.m3u8","format":"hls","index":0,"stream":0,"type":"video","codec":"h264","coder":"h264","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":1280,"height":720},{"url":"https://cdn.livespotting.com/vpu/e9slfpe3/z60wzayk_1440.m3u8","format":"hls","index":1,"stream":0,"type":"video","codec":"h264","coder":"h264","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":2560,"height":1440},{"url":"anullsrc=r=44100:cl=mono","format":"lavfi","index":2,"stream":0,"type":"audio","codec":"pcm_u8","coder":"pcm_u8","bitrate_kbps":352,"duration_sec":0.000000,"language":"und","sampling_hz":44100,"layout":"mono","channels":1}]`)
+	parser.Parse(`hls.streammap:{"address":"http://127.0.0.1:8080/memfs/live/%v.m3u8","variants":[{"variant":0,"address":"http://127.0.0.1:8080/memfs/live/0.m3u8","streams":[0,2]},{"variant":1,"address":"http://127.0.0.1:8080/memfs/live/1.m3u8","streams":[1,3]}]}`)
+	parser.Parse(`ffmpeg.outputs:[{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":0,"type":"video","codec":"h264","coder":"copy","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":1280,"height":720},{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":1,"type":"video","codec":"h264","coder":"copy","bitrate_kbps":0,"duration_sec":0.000000,"language":"und","fps":25.000000,"pix_fmt":"yuvj420p","width":2560,"height":1440},{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":2,"type":"audio","codec":"aac","coder":"aac","bitrate_kbps":69,"duration_sec":0.000000,"language":"und","sampling_hz":44100,"layout":"mono","channels":1},{"url":"http://127.0.0.1:8080/memfs/live/%v.m3u8","format":"hls","index":0,"stream":3,"type":"audio","codec":"aac","coder":"aac","bitrate_kbps":69,"duration_sec":0.000000,"language":"und","sampling_hz":44100,"layout":"mono","channels":1}]`)
+	parser.Parse(`ffmpeg.progress:{"inputs":[{"index":0,"stream":0,"framerate":{"min":24.975,"max":24.975,"avg":24.975},"frame":149,"keyframe":3,"packet":149,"size_kb":1467,"size_bytes":1501854},{"index":1,"stream":0,"framerate":{"min":24.975,"max":24.975,"avg":24.975},"frame":149,"keyframe":3,"packet":149,"size_kb":4428,"size_bytes":4534541},{"index":2,"stream":0,"framerate":{"min":43.066,"max":43.068,"avg":43.066},"frame":257,"keyframe":257,"packet":257,"size_kb":257,"size_bytes":263168}],"outputs":[{"index":0,"stream":0,"frame":149,"keyframe":3,"packet":149,"q":-1.0,"size_kb":1467,"size_bytes":1501923,"extradata_size_bytes":69},{"index":0,"stream":1,"frame":149,"keyframe":3,"packet":149,"q":-1.0,"size_kb":4428,"size_bytes":4534612,"extradata_size_bytes":71},{"index":0,"stream":2,"frame":257,"keyframe":256,"packet":256,"size_kb":1,"size_bytes":1046,"extradata_size_bytes":5},{"index":0,"stream":3,"frame":257,"keyframe":256,"packet":256,"size_kb":1,"size_bytes":1046,"extradata_size_bytes":5}],"frame":149,"packet":149,"q":-1.0,"size_kb":5897,"size_bytes":6038627,"time":"0h0m5.96s","speed":4.79,"dup":0,"drop":0}`)
+
+	progress := parser.Progress()
+
+	require.Equal(t, 3, len(progress.Input))
+	require.Equal(t, 4, len(progress.Output))
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/0.m3u8", progress.Output[0].Address)
+	require.Equal(t, uint64(0), progress.Output[0].Index)
+	require.Equal(t, uint64(0), progress.Output[0].Stream)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/1.m3u8", progress.Output[1].Address)
+	require.Equal(t, uint64(1), progress.Output[1].Index)
+	require.Equal(t, uint64(0), progress.Output[1].Stream)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/0.m3u8", progress.Output[2].Address)
+	require.Equal(t, uint64(0), progress.Output[2].Index)
+	require.Equal(t, uint64(1), progress.Output[2].Stream)
+
+	require.Equal(t, "http://127.0.0.1:8080/memfs/live/1.m3u8", progress.Output[3].Address)
+	require.Equal(t, uint64(1), progress.Output[3].Index)
+	require.Equal(t, uint64(1), progress.Output[3].Stream)
+}
+
 func TestParserPatterns(t *testing.T) {
 	p := New(Config{
 		LogHistory: 3,

ffmpeg/parse/types.go

@@ -115,8 +115,6 @@ type ffmpegProgressIO struct {
 }
 
 func (io *ffmpegProgressIO) exportTo(progress *ProgressIO) {
-	progress.Index = io.Index
-	progress.Stream = io.Stream
 	progress.Frame = io.Frame
 	progress.Keyframe = io.Keyframe
 	progress.Framerate.Min = io.Framerate.Min
@@ -228,9 +226,132 @@ func (io *ffmpegProcessIO) export() ProgressIO {
 	}
 }
 
+type ffmpegGraphElement struct {
+	SrcName   string `json:"src_name"`
+	SrcFilter string `json:"src_filter"`
+	DstName   string `json:"dst_name"`
+	DstFilter string `json:"dst_filter"`
+	Inpad     string `json:"inpad"`
+	Outpad    string `json:"outpad"`
+	Timebase  string `json:"timebase"`
+	Type      string `json:"type"`
+	Format    string `json:"format"`
+	Sampling  uint64 `json:"sampling_hz"`
+	Layout    string `json:"layout"`
+	Width     uint64 `json:"width"`
+	Height    uint64 `json:"height"`
+}
+
+func (f *ffmpegGraphElement) Export() GraphElement {
+	return GraphElement{
+		SrcName:   f.SrcName,
+		SrcFilter: f.SrcFilter,
+		DstName:   f.DstName,
+		DstFilter: f.DstFilter,
+		Inpad:     f.Inpad,
+		Outpad:    f.Outpad,
+		Timebase:  f.Timebase,
+		Type:      f.Type,
+		Format:    f.Format,
+		Sampling:  f.Sampling,
+		Layout:    f.Layout,
+		Width:     f.Width,
+		Height:    f.Height,
+	}
+}
+
+type ffmpegGraph struct {
+	Index uint64               `json:"index"`
+	Graph []ffmpegGraphElement `json:"graph"`
+}
+
+func (f *ffmpegGraph) Export() Graph {
+	g := Graph{
+		Index: f.Index,
+	}
+
+	for _, e := range f.Graph {
+		g.Graph = append(g.Graph, e.Export())
+	}
+
+	return g
+}
+
+type ffmpegMapping struct {
+	Input  *ffmpegMappingIO `json:"input"`
+	Output *ffmpegMappingIO `json:"output"`
+	Graph  struct {
+		Index uint64 `json:"index"`
+		Name  string `json:"name"`
+	} `json:"graph"`
+	Copy bool `json:"copy"`
+}
+
+type ffmpegMappingIO struct {
+	Index  uint64 `json:"index"`
+	Stream uint64 `json:"stream"`
+}
+
+type ffmpegStreamMapping struct {
+	Graphs  []ffmpegGraph   `json:"graphs"`
+	Mapping []ffmpegMapping `json:"mapping"`
+}
+
 type ffmpegProcess struct {
 	input      []ffmpegProcessIO
 	output     []ffmpegProcessIO
+	mapping    ffmpegStreamMapping
+	hlsMapping *ffmpegHLSStreamMap
+}
+
+func (f *ffmpegProcess) ExportMapping() StreamMapping {
+	sm := StreamMapping{}
+
+	for _, g := range f.mapping.Graphs {
+		sm.Graphs = append(sm.Graphs, g.Export())
+	}
+
+	for _, fm := range f.mapping.Mapping {
+		m := Mapping{
+			Input:  -1,
+			Output: -1,
+			Graph: MappingGraph{
+				Index: int(fm.Graph.Index),
+				Name:  fm.Graph.Name,
+			},
+			Copy: fm.Copy,
+		}
+
+		if len(m.Graph.Name) == 0 {
+			m.Graph.Index = -1
+		}
+
+		if fm.Input != nil {
+			for i, in := range f.input {
+				if in.Index != fm.Input.Index || in.Stream != fm.Input.Stream {
+					continue
+				}
+
+				m.Input = i
+				break
+			}
+		}
+
+		if fm.Output != nil {
+			for i, out := range f.output {
+				if out.Index != fm.Output.Index || out.Stream != fm.Output.Stream {
+					continue
+				}
+
+				m.Output = i
+				break
+			}
+		}
+
+		sm.Mapping = append(sm.Mapping, m)
+	}
+
+	return sm
 }
 
 func (p *ffmpegProcess) export() Progress {
@@ -248,9 +369,40 @@ func (p *ffmpegProcess) export() Progress {
 		progress.Output = append(progress.Output, aio)
 	}
 
+	progress.Mapping = p.ExportMapping()
+
+	if p.hlsMapping != nil {
+		for _, variant := range p.hlsMapping.Variants {
+			for s, stream := range variant.Streams {
+				if stream >= len(progress.Output) {
+					continue
+				}
+
+				output := progress.Output[stream]
+
+				output.Address = variant.Address
+				output.Index = variant.Variant
+				output.Stream = uint64(s)
+
+				progress.Output[stream] = output
+			}
+		}
+	}
+
 	return progress
 }
 
+type ffmpegHLSStreamMap struct {
+	Address  string             `json:"address"`
+	Variants []ffmpegHLSVariant `json:"variants"`
+}
+
+type ffmpegHLSVariant struct {
+	Variant uint64 `json:"variant"`
+	Address string `json:"address"`
+	Streams []int  `json:"streams"`
+}
+
 type ProgressIO struct {
 	Address string
 
@@ -293,6 +445,7 @@ type ProgressIO struct {
 type Progress struct {
 	Input     []ProgressIO
 	Output    []ProgressIO
+	Mapping   StreamMapping
 	Frame     uint64
 	Packet    uint64
 	FPS       float64
@@ -341,3 +494,41 @@ type Usage struct {
 		Limit   uint64
 	}
 }
+
+type GraphElement struct {
+	SrcName   string
+	SrcFilter string
+	DstName   string
+	DstFilter string
+	Inpad     string
+	Outpad    string
+	Timebase  string
+	Type      string // audio or video
+	Format    string
+	Sampling  uint64 // Hz
+	Layout    string
+	Width     uint64
+	Height    uint64
+}
+
+type Graph struct {
+	Index uint64
+	Graph []GraphElement
+}
+
+type MappingGraph struct {
+	Index int
+	Name  string
+}
+
+type Mapping struct {
+	Input  int
+	Output int
+	Graph  MappingGraph
+	Copy   bool
+}
+
+type StreamMapping struct {
+	Graphs  []Graph
+	Mapping []Mapping
+}