diff --git a/back/src/Kyoo.Core/Views/Helper/Transcoder.cs b/back/src/Kyoo.Core/Views/Helper/Transcoder.cs
index 43f25a8d..6a7ceb84 100644
--- a/back/src/Kyoo.Core/Views/Helper/Transcoder.cs
+++ b/back/src/Kyoo.Core/Views/Helper/Transcoder.cs
@@ -27,6 +27,7 @@ using Kyoo.Abstractions.Models.Permissions;
 using Kyoo.Abstractions.Models.Utils;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.WebUtilities;
 
 namespace Kyoo.Core.Api;
 
@@ -54,7 +55,7 @@ public abstract class TranscoderApi<T>(IRepository<T> repository) : CrudThumbsAp
 	private async Task<string> _GetPath64(Identifier identifier)
 	{
 		string path = await GetPath(identifier);
-		return Convert.ToBase64String(Encoding.UTF8.GetBytes(path));
+		return WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(path));
 	}
 
 	/// <summary>
diff --git a/transcoder/utils.go b/transcoder/utils.go
index 9feaee4f..cd88c545 100644
--- a/transcoder/utils.go
+++ b/transcoder/utils.go
@@ -24,9 +24,9 @@ func GetPath(c echo.Context) (string, string, error) {
 	if key == "" {
 		return "", "", echo.NewHTTPError(http.StatusBadRequest, "Missing resouce path.")
 	}
-	pathb, err := base64.StdEncoding.DecodeString(key)
+	pathb, err := base64.RawURLEncoding.DecodeString(key)
 	if err != nil {
-		return "", "", echo.NewHTTPError(http.StatusBadRequest, "Invalid path. Should be base64 encoded.")
+		return "", "", echo.NewHTTPError(http.StatusBadRequest, "Invalid path. Should be base64url (without padding) encoded.")
 	}
 	path := filepath.Clean(string(pathb))
 	if !filepath.IsAbs(path) {