Made it possible to not use format in preset

app/library/YTDLPOpts.py

@@ -82,8 +82,7 @@ class YTDLPOpts(metaclass=Singleton):
 
             self._preset_opts["cookiefile"] = str(file)
 
-        if preset.format:
-            self._preset_opts["format"] = preset.format
+        self._preset_opts["format"] = preset.format
 
         if preset.template:
             self._preset_opts["outtmpl"] = {"default": preset.template, "chapter": self._config.output_template_chapter}
@@ -129,4 +128,7 @@ class YTDLPOpts(metaclass=Singleton):
             self.presets_opts = {}
             self._item_opts = {}
 
+        if "format" in data and "not_set" == data["format"]:
+            data["format"] = None
+
         return data

ui/components/PresetForm.vue

@@ -111,7 +111,8 @@
                     <span class="icon"><i class="fa-solid fa-info" /></span>
                     <span>The yt-dlp <code>[--format, -f]</code> video format code. see <NuxtLink
                         href="https://github.com/yt-dlp/yt-dlp?tab=readme-ov-file#format-selection" target="blank">this
-                        url</NuxtLink> for more info.</span>
+                        url</NuxtLink> for more info.</span>. Note, as this key is required, you can set the value to <code>not_set</code>
+                        to use the default yt-dlp format.
                   </span>
                 </div>
               </div>