diff --git a/server/src/video.rs b/server/src/video.rs
index 95fb482..3d72007 100644
--- a/server/src/video.rs
+++ b/server/src/video.rs
@@ -312,7 +312,11 @@ impl WebcamSink {
             .expect("appsrc");
         src.set_is_live(true);
         src.set_format(gst::Format::Time);
-        src.set_property("block", &true);
+        let block = std::env::var("LESAVKA_UVC_APP_BLOCK")
+            .ok()
+            .map(|v| v != "0")
+            .unwrap_or(false);
+        src.set_property("block", &block);
 
         if use_mjpeg {
             let caps_mjpeg = gst::Caps::builder("image/jpeg")