add: WebDL / TVRip media types and filename-token override

Source kind is now declared per-file via a `dvd` / `bluray` / `webdl` /
`tvrip` token in the basename (case-insensitive, word-bounded). Matches
the existing `tt…` / `tvm…` filename convention. When no token is
present, falls back to the pixel-count guess in DetectMediaType, which
still only chooses between DVD and Blu-ray.

The parsed media type drives both ORIGINAL_MEDIA_TYPE in the muxed
metadata and the CRF/preset profile used for encoding. EncodingConfig
gains `webdl` and `tvrip` sub-blocks with conservative defaults
(WebDL 30/3, TVRip 32/2); user can override in config.yaml.

Manual updated with the new tokens, config fields, and pipeline
description.

cmd/videnc/main.go

@@ -95,14 +95,25 @@ func processFile(inputPath string, cfg *types.Config, enc *encoder.Encoder, meta
 		log.ErrorFile(inputPath, "Getting stream languages", err.Error())
 	}
 
-	mediaType := watcher.DetectMediaType(width, height)
-	crf := cfg.Encoding.DVD.CRF
-	preset := cfg.Encoding.DVD.Preset
-	if mediaType == types.MediaTypeBluRay {
-		crf = cfg.Encoding.Bluray.CRF
-		preset = cfg.Encoding.Bluray.Preset
+	mediaType := metadata.ParseMediaType(filename)
+	if mediaType == "" {
+		mediaType = watcher.DetectMediaType(width, height)
 	}
 
+	var profile types.EncodingParams
+	switch mediaType {
+	case types.MediaTypeBluRay:
+		profile = cfg.Encoding.Bluray
+	case types.MediaTypeWebDL:
+		profile = cfg.Encoding.WebDL
+	case types.MediaTypeTVRip:
+		profile = cfg.Encoding.TVRip
+	default:
+		profile = cfg.Encoding.DVD
+	}
+	crf := profile.CRF
+	preset := profile.Preset
+
 	var meta *types.Metadata
 	if isSeries && tvmazeID != "" && season != "" && episode != "" {
 		meta, err = metaClient.FetchSeriesMetadata(tvmazeID, season, episode)