diff --git a/methods.go b/methods.go
index a724303..9c8474d 100644
--- a/methods.go
+++ b/methods.go
@@ -99,6 +99,8 @@ type StickerConfig struct {
 // VideoConfig contains information about a SendVideo request.
 type VideoConfig struct {
 	ChatID           int
+	Duration         int
+	Caption          string
 	ReplyToMessageID int
 	ReplyMarkup      interface{}
 	UseExistingVideo bool
@@ -600,6 +602,12 @@ func (bot *BotAPI) SendVideo(config VideoConfig) (Message, error) {
 		if config.ReplyToMessageID != 0 {
 			v.Add("reply_to_message_id", strconv.Itoa(config.ReplyToMessageID))
 		}
+		if config.Duration != 0 {
+			v.Add("duration", strconv.Itoa(config.Duration))
+		}
+		if config.Caption != "" {
+			v.Add("caption", config.Caption)
+		}
 		if config.ReplyMarkup != nil {
 			data, err := json.Marshal(config.ReplyMarkup)
 			if err != nil {
diff --git a/types.go b/types.go
index f3c4e69..fda3298 100644
--- a/types.go
+++ b/types.go
@@ -73,6 +73,7 @@ type Message struct {
 	Photo               []PhotoSize     `json:"photo"`
 	Sticker             Sticker         `json:"sticker"`
 	Video               Video           `json:"video"`
+	Caption             string          `json:"caption"`
 	Contact             Contact         `json:"contact"`
 	Location            Location        `json:"location"`
 	NewChatParticipant  User            `json:"new_chat_participant"`
@@ -136,7 +137,6 @@ type Video struct {
 	Thumbnail PhotoSize `json:"thumb"`
 	MimeType  string    `json:"mime_type"`
 	FileSize  int       `json:"file_size"`
-	Caption   string    `json:"caption"`
 }
 
 // Contact contains information about a contact, such as PhoneNumber and UserId.
@@ -144,7 +144,7 @@ type Contact struct {
 	PhoneNumber string `json:"phone_number"`
 	FirstName   string `json:"first_name"`
 	LastName    string `json:"last_name"`
-	UserID      string `json:"user_id"`
+	UserID      int    `json:"user_id"`
 }
 
 // Location contains information about a place, such as Longitude and Latitude.