Revert to Docker-only source paths, fix config validation, improve transcoding info

- handlers_sources.go: revert to relative paths rooted at /media (remove standalone absolute-path mode)
- settings.html: remove manual path input, restore auto-loading source tree from /media
- config.go: remove filesystem existence checks from Validate() — paths may be temporarily unavailable
- transcoder.go: always specify fps in ffmpeg args when MaxFPS is set, preserving source fps if lower than limit
- copier.go: include source codec/format and target codec/format in transcoding task message

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

internal/api/handlers_sources.go

@@ -3,6 +3,7 @@ package api
 import (
 	"errors"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
 	"sort"
@@ -10,19 +11,20 @@ import (
 )
 
 func (s *Server) handleSources(w http.ResponseWriter, r *http.Request) {
-	absPath, err := normalizeSourcePathQuery(r.URL.Query().Get("path"))
+	relPath, err := normalizeSourcePath(r.URL.Query().Get("path"))
 	if err != nil {
 		jsonErr(w, http.StatusBadRequest, err.Error())
 		return
 	}
-	if absPath == "" {
-		jsonOK(w, map[string]any{"path": "", "items": []map[string]string{}})
-		return
+
+	absPath := s.deps.Config.MediaPath
+	if relPath != "" {
+		absPath = filepath.Join(absPath, relPath)
 	}
 
 	entries, err := os.ReadDir(absPath)
 	if err != nil {
-		jsonOK(w, map[string]any{"path": absPath, "items": []map[string]string{}})
+		jsonOK(w, map[string]any{"path": relPath, "items": []map[string]string{}})
 		return
 	}
 
@@ -36,10 +38,13 @@ func (s *Server) handleSources(w http.ResponseWriter, r *http.Request) {
 		if !e.IsDir() || strings.HasPrefix(e.Name(), ".") {
 			continue
 		}
-		childPath := filepath.Join(absPath, e.Name())
+		childPath := e.Name()
+		if relPath != "" {
+			childPath = filepath.Join(relPath, childPath)
+		}
 		items = append(items, item{
 			Name: e.Name(),
-			Path: childPath,
+			Path: filepath.ToSlash(childPath),
 		})
 	}
 
@@ -48,18 +53,26 @@ func (s *Server) handleSources(w http.ResponseWriter, r *http.Request) {
 	})
 
 	jsonOK(w, map[string]any{
-		"path":  absPath,
+		"path":  relPath,
 		"items": items,
 	})
 }
 
-func normalizeSourcePathQuery(raw string) (string, error) {
+func normalizeSourcePath(raw string) (string, error) {
+	raw, _ = url.QueryUnescape(raw)
 	raw = strings.TrimSpace(raw)
+	raw = filepath.ToSlash(raw)
+	raw = strings.TrimPrefix(raw, "/")
 	if raw == "" || raw == "." {
 		return "", nil
 	}
+
 	clean := filepath.Clean(raw)
-	if !filepath.IsAbs(clean) {
+	clean = filepath.ToSlash(clean)
+	if clean == "." {
+		return "", nil
+	}
+	if clean == ".." || strings.HasPrefix(clean, "../") {
 		return "", errors.New("invalid source path")
 	}
 	return clean, nil

internal/config/config.go

@@ -116,25 +116,7 @@ func Save(path string, cfg *Config) error {
 
 func (c *Config) Validate() error {
 	c.MediaPath = NormalizeMediaPath(c.MediaPath)
-	if c.MediaPath != "" {
-		info, err := os.Stat(c.MediaPath)
-		if err != nil {
-			return errors.New("media_path is not accessible")
-		}
-		if !info.IsDir() {
-			return errors.New("media_path must be a directory")
-		}
-	}
 	c.Sources = NormalizeSources(c.Sources, c.MediaPath)
-	for _, source := range c.Sources {
-		info, err := os.Stat(source.Path)
-		if err != nil {
-			return errors.New("source path is not accessible: " + source.Path)
-		}
-		if !info.IsDir() {
-			return errors.New("source path must be a directory: " + source.Path)
-		}
-	}
 	if c.ReserveFreeGB < 0 {
 		return errors.New("reserve_free_gb must be >= 0")
 	}

internal/copier/copier.go

@@ -392,9 +392,15 @@ func (c *Copier) processVideo(ctx context.Context, taskID string, database *db.D
 	ext := transcoder.OutputExt(profile.OutputFormat)
 	dstTranscoded := strings.TrimSuffix(dst, filepath.Ext(dst)) + ext
 
+	srcFPS := fmt.Sprintf("%.2f", info.FPS)
+	msg := fmt.Sprintf("Transcoding %s (%s/%dch/%sfps → %s/%s/%dfps %s)",
+		filepath.Base(src),
+		info.Codec, info.AudioChannels, srcFPS,
+		profile.VideoCodec, profile.AudioCodec, profile.MaxFPS, profile.OutputFormat,
+	)
 	c.tasks.Update(taskID, func(t *task.Task) {
 		t.Phase = task.PhaseTranscoding
-		t.Message = "Transcoding " + filepath.Base(src)
+		t.Message = msg
 	})
 	if t, ok := c.tasks.Get(taskID); ok {
 		_ = database.UpdateTask(*t)

internal/transcoder/transcoder.go

@@ -97,8 +97,14 @@ func buildArgs(opts Options) []string {
 	if maxH := maxHeight(p.MaxResolution); maxH > 0 {
 		filters = append(filters, fmt.Sprintf("scale=-2:min(%d\\,ih)", maxH))
 	}
-	if p.MaxFPS > 0 && src.FPS > float64(p.MaxFPS)+0.01 {
-		filters = append(filters, fmt.Sprintf("fps=%d", p.MaxFPS))
+	if p.MaxFPS > 0 {
+		targetFPS := p.MaxFPS
+		if src.FPS > 0 && src.FPS < float64(targetFPS) {
+			// Источник медленнее лимита — сохраняем исходный FPS
+			filters = append(filters, fmt.Sprintf("fps=%.3f", src.FPS))
+		} else {
+			filters = append(filters, fmt.Sprintf("fps=%d", targetFPS))
+		}
 	}
 	if len(filters) > 0 {
 		args = append(args, "-vf", strings.Join(filters, ","))