diff --git a/client/upload.html b/client/upload.html
index a96f3a8..bd34f5b 100644
--- a/client/upload.html
+++ b/client/upload.html
@@ -41,7 +41,11 @@ <h1 class="page-title special-red">Upload</h1>
           placeholder="A movie about car racing."
         ></textarea>
         <label for="video">Drop that video...</label>
-        <input id="video" type="file" name="video" accept="video/*" />
+        <input id="video" type="file" name="video" accept=".mp4" />
+        <br />
+
+        <p id="error" class="special-red" style="display: none;"></p>
+
         <br />
 
         <!-- <label for="thumbnail">Thumbnail</label>
diff --git a/static/upload.js b/static/upload.js
index 7f33a58..e3dc44d 100644
--- a/static/upload.js
+++ b/static/upload.js
@@ -3,6 +3,7 @@ const divOutput = document.getElementById("divOutput");
 const video = document.getElementById("video");
 const title = document.getElementById("title");
 const description = document.getElementById("description");
+const error = document.getElementById("error");
 
 uploadVideoButton.addEventListener("click", () => {
     console.log(title.value);
@@ -11,8 +12,18 @@ uploadVideoButton.addEventListener("click", () => {
     const fileReader = new FileReader();
     const theFile = video.files[0];
 
+    console.log(theFile.type);
+    const type = theFile.type;
+    if(type !== "video/mp4") {
+        error.textContent = "Only .mp4 files are supported";
+        error.style.display = "block";
+        return;
+    }
+
+    error.style.display = "none";
+
     fileReader.onload = async (ev) => {
-        const CHUNK_SIZE = 5000000;
+        const CHUNK_SIZE = 20000000;
         const chunkCount = parseInt(ev.target.result.byteLength / CHUNK_SIZE);
         console.log(chunkCount);
         console.log("Read successfully");
diff --git a/utils/util.go b/utils/util.go
index 89466b8..4774cce 100644
--- a/utils/util.go
+++ b/utils/util.go
@@ -6,7 +6,7 @@ import (
 	"crypto/sha1"
 	"database/sql"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"mime/multipart"
 	"net/http"
@@ -68,7 +68,7 @@ func BreakFile(videoPath string, fileName string) bool {
 }
 
 func ResumeUploadIfAny(db *sql.DB) {
-	folders, err := ioutil.ReadDir("segments")
+	folders, err := os.ReadDir("segments")
 
 	if err != nil {
 		log.Fatal(err)
@@ -80,7 +80,7 @@ func ResumeUploadIfAny(db *sql.DB) {
 }
 
 func UploadToAppwrite(folderName string, db *sql.DB) {
-	files, err := ioutil.ReadDir(fmt.Sprintf("segments/%s", folderName))
+	files, err := os.ReadDir(fmt.Sprintf("segments/%s", folderName))
 
 	if err != nil {
 		log.Fatal(err)
@@ -97,8 +97,11 @@ func UploadToAppwrite(folderName string, db *sql.DB) {
 	log.Println("Now uploading chunks of " + folderName + " to Appwrite Storage...")
 	var count int = -1
 	for idx, file := range files {
-		fileToUpload, err := ioutil.ReadFile(fmt.Sprintf("segments/%s/%s", folderName, file.Name()))
-
+		x, err:= os.Stat(fmt.Sprintf("segments/%s/%s", folderName, file.Name()))
+		log.Println(x.Size(), err)
+		log.Println(x.Name())
+		fileToUpload, err := os.ReadFile(fmt.Sprintf("segments/%s/%s", folderName, file.Name()))
+		
 		if err != nil {
 			log.Fatal(err)
 		}
@@ -154,15 +157,14 @@ func UploadToAppwrite(folderName string, db *sql.DB) {
 		request.Header.Set("X-Appwrite-Key", os.Getenv("APPWRITE_KEY"))
 
 		client := &http.Client{}
-
 		response, err := client.Do(request)
 		if err != nil {
 			log.Fatal(err)
 		}
-
 		defer response.Body.Close()
+		log.Println(response.StatusCode)
 		if response.StatusCode != 201 {
-			body, err := ioutil.ReadAll(response.Body)
+			body, err := io.ReadAll(response.Body)
 			if err != nil {
 				log.Fatal(err)
 			}