Add per-disk profiles with video transcoding support

Each disk stores .jukebox/profile.json with copy parameters (dest
folder, overwrite mode, file select, reserve space, auto-copy) and
optional transcoding limits for the target player (codec, resolution,
bitrate, FPS, audio channels, output format).

On copy, video files are probed with ffprobe; if they exceed the
profile limits they are transcoded via ffmpeg (-threads 0 for full
CPU usage), otherwise copied as-is. Scale filter never upscales.

New: internal/disk/profile.go, internal/transcoder/{detect,transcoder}.go
API: GET/PUT /api/disks/profile?mount_path=
UI: disk profile panel in dashboard for known disks
Dockerfile: adds ffmpeg to the runtime image

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/api/handlers_copy.go

@@ -13,17 +13,25 @@ import (
 )
 
 func (s *Server) copyOptions(cfg *config.Config, diskInfo disk.DiskInfo, overwriteMode config.OverwriteMode) copier.Options {
-	return copier.Options{
+	opts := copier.Options{
 		DiskID:            diskInfo.DiskID,
 		MountPath:         diskInfo.MountPath,
 		MediaPath:         cfg.MediaPath,
-		DestFolder:        cfg.DestFolder,
 		SourceRules:       cfg.Sources,
 		AllowedExtensions: cfg.EffectiveAllowedExtensions(),
-		ReserveFreeGB:     cfg.ReserveFreeGB,
 		OverwriteMode:     overwriteMode,
-		FileSelectMode:    cfg.FileSelectMode,
 	}
+	if p := diskInfo.Profile; p != nil {
+		opts.DestFolder = p.DestFolder
+		opts.ReserveFreeGB = p.ReserveFreeGB
+		opts.FileSelectMode = config.FileSelectMode(p.FileSelectMode)
+		opts.Transcode = p.Transcode
+	} else {
+		opts.DestFolder = cfg.DestFolder
+		opts.ReserveFreeGB = cfg.ReserveFreeGB
+		opts.FileSelectMode = cfg.FileSelectMode
+	}
+	return opts
 }
 
 func hasEnabledSources(cfg *config.Config) bool {
@@ -78,8 +86,11 @@ func (s *Server) handleCopyStart(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	reserveBytes := int64(cfg.ReserveFreeGB * 1e9)
-	if diskInfo.FreeBytes <= reserveBytes {
+	reserveGB := cfg.ReserveFreeGB
+	if diskInfo.Profile != nil {
+		reserveGB = diskInfo.Profile.ReserveFreeGB
+	}
+	if diskInfo.FreeBytes <= int64(reserveGB*1e9) {
 		jsonErr(w, http.StatusUnprocessableEntity, "free space is below reserve threshold")
 		return
 	}
@@ -137,8 +148,11 @@ func (s *Server) handleCopyStartSelected(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	reserveBytes := int64(cfg.ReserveFreeGB * 1e9)
-	if diskInfo.FreeBytes <= reserveBytes {
+	reserveGB := cfg.ReserveFreeGB
+	if diskInfo.Profile != nil {
+		reserveGB = diskInfo.Profile.ReserveFreeGB
+	}
+	if diskInfo.FreeBytes <= int64(reserveGB*1e9) {
 		jsonErr(w, http.StatusUnprocessableEntity, "free space is below reserve threshold")
 		return
 	}

internal/api/handlers_disk.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"time"
 
+	"jukebox_maker/internal/config"
 	"jukebox_maker/internal/disk"
 )
 
@@ -15,6 +16,7 @@ func (s *Server) diskResponse(info disk.DiskInfo) map[string]any {
 		"total_bytes": info.TotalBytes,
 		"free_bytes":  info.FreeBytes,
 		"mount_path":  info.MountPath,
+		"profile":     info.Profile,
 	}
 	if info.DiskID != "" {
 		if s.deps.OnDiskInit != nil {
@@ -113,3 +115,39 @@ func (s *Server) handleDiskInit(w http.ResponseWriter, r *http.Request) {
 	}
 	jsonOK(w, map[string]string{"disk_id": diskID})
 }
+
+func (s *Server) handleGetProfile(w http.ResponseWriter, r *http.Request) {
+	mountPath := config.NormalizeMediaPath(r.URL.Query().Get("mount_path"))
+	if mountPath == "" {
+		jsonErr(w, http.StatusBadRequest, "mount_path is required")
+		return
+	}
+	p, err := disk.LoadProfile(mountPath)
+	if err != nil {
+		jsonErr(w, http.StatusNotFound, "profile not found")
+		return
+	}
+	jsonOK(w, p)
+}
+
+func (s *Server) handlePutProfile(w http.ResponseWriter, r *http.Request) {
+	mountPath := config.NormalizeMediaPath(r.URL.Query().Get("mount_path"))
+	if mountPath == "" {
+		jsonErr(w, http.StatusBadRequest, "mount_path is required")
+		return
+	}
+	var p disk.DiskProfile
+	if err := json.NewDecoder(r.Body).Decode(&p); err != nil {
+		jsonErr(w, http.StatusBadRequest, "invalid JSON: "+err.Error())
+		return
+	}
+	if err := disk.SaveProfile(mountPath, &p); err != nil {
+		jsonErr(w, http.StatusInternalServerError, "save profile: "+err.Error())
+		return
+	}
+	// Обновляем информацию о диске в watcher если он там есть
+	if s.deps.Watcher != nil {
+		s.deps.Watcher.ProbeNow()
+	}
+	jsonOK(w, &p)
+}

internal/api/server.go

@@ -70,6 +70,8 @@ func (s *Server) routes() {
 	s.mux.HandleFunc("POST /api/disks/{diskID}/copy/start", s.handleCopyStart)
 	s.mux.HandleFunc("POST /api/disks/{diskID}/copy/cancel", s.handleCopyCancel)
 	s.mux.HandleFunc("GET /api/tasks/{id}", s.handleTaskGet)
+	s.mux.HandleFunc("GET /api/disks/profile", s.handleGetProfile)
+	s.mux.HandleFunc("PUT /api/disks/profile", s.handlePutProfile)
 }
 
 func (s *Server) handleDashboard(w http.ResponseWriter, r *http.Request) {