feat: add configuration options for video download settings

config/viper.go

@@ -35,6 +35,7 @@ type Config struct {
 	Storages []storage.StorageConfig `toml:"-" mapstructure:"-" json:"storages"`
 	Parser   parserConfig            `toml:"parser" mapstructure:"parser" json:"parser"`
 	Hook     hookConfig              `toml:"hook" mapstructure:"hook" json:"hook"`
+	Ytdlp    YtdlpConfig             `toml:"ytdlp" mapstructure:"ytdlp" json:"ytdlp"`
 }
 
 type aria2Config struct {
@@ -131,6 +132,9 @@ func Init(ctx context.Context, configFile ...string) error {
 		"api.host":   "0.0.0.0",
 		"api.port":   8080,
 		"api.token":  "",
+
+		// yt-dlp
+		"ytdlp.recode": "mp4",
 	}
 
 	for key, value := range defaultConfigs {

config/ytdlp.go

@@ -0,0 +1,13 @@
+package config
+
+type YtdlpConfig struct {
+	// MaxHeight limits the video resolution by height in pixels (e.g. 1080, 720).
+	// 0 means no limit (best available). Ignored when Format is set.
+	MaxHeight int `toml:"max_height" mapstructure:"max_height" json:"max_height"`
+	// Format is a raw yt-dlp format selector (-f). When set, it takes precedence
+	// over MaxHeight and gives the user full control.
+	Format string `toml:"format" mapstructure:"format" json:"format"`
+	// Recode is the target video container yt-dlp recodes into (e.g. mp4).
+	// Empty disables recoding.
+	Recode string `toml:"recode" mapstructure:"recode" json:"recode"`
+}