fix: add av1/hevc vaapi encoders, simplify welcome UI, truncate output path

src/faceblur/app.py

@@ -92,7 +92,7 @@ class WelcomeScreen(Screen):
     }
 
     #logo {
-        color: $text;
+        color: $accent;
         text-style: bold;
         margin-bottom: 2;
         width: auto;
@@ -144,7 +144,7 @@ class WelcomeScreen(Screen):
             with Middle():
                 with Vertical(id="app-container"):
                     with Center():
-                        yield Static(LOGO, id="logo")
+                        yield Label("PyFaceBlur", id="logo")
 
                     with Horizontal(classes="form-row"):
                         yield Label("Video file:", classes="form-label")
@@ -644,7 +644,7 @@ class EncodingScreen(Screen):
                     yield Label("Encoding video with face blur...", id="encoding-phase")
                     yield ProgressBar(total=100, id="encoding-progress")
                     yield Label("", id="encoding-status")
-                    yield Label(f"Output: {self.output_path}", id="output-label")
+                    yield Label(f"Output: {self.output_path.name}", id="output-label")
                     yield Button("Done — Exit", id="done-btn", variant="success")
 
     def on_mount(self) -> None:

src/faceblur/encode.py

@@ -116,7 +116,59 @@ def find_best_encoder() -> Tuple[str, List[str], List[str]]:
     if subprocess.run(cmd, capture_output=True, timeout=5).returncode == 0:
         return "h264_nvenc", [], []
 
-    # 2. Linux VA-API (AMD/Intel)
+    # 2. Linux VA-API (AV1)
+    cmd = [
+        "ffmpeg",
+        "-v",
+        "quiet",
+        "-vaapi_device",
+        "/dev/dri/renderD128",
+        "-f",
+        "lavfi",
+        "-i",
+        "nullsrc=s=64x64:d=0.1",
+        "-vf",
+        "format=nv12,hwupload",
+        "-c:v",
+        "av1_vaapi",
+        "-f",
+        "null",
+        "-",
+    ]
+    if subprocess.run(cmd, capture_output=True, timeout=5).returncode == 0:
+        return (
+            "av1_vaapi",
+            ["-vaapi_device", "/dev/dri/renderD128"],
+            ["-vf", "format=nv12,hwupload"],
+        )
+
+    # 3. Linux VA-API (HEVC/H.265)
+    cmd = [
+        "ffmpeg",
+        "-v",
+        "quiet",
+        "-vaapi_device",
+        "/dev/dri/renderD128",
+        "-f",
+        "lavfi",
+        "-i",
+        "nullsrc=s=64x64:d=0.1",
+        "-vf",
+        "format=nv12,hwupload",
+        "-c:v",
+        "hevc_vaapi",
+        "-f",
+        "null",
+        "-",
+    ]
+    if subprocess.run(cmd, capture_output=True, timeout=5).returncode == 0:
+        return (
+            "hevc_vaapi",
+            ["-vaapi_device", "/dev/dri/renderD128"],
+            ["-vf", "format=nv12,hwupload"],
+        )
+
+    # 4. Linux VA-API (H.264)
     cmd = [
         "ffmpeg",
         "-v",
@@ -142,7 +194,7 @@ def find_best_encoder() -> Tuple[str, List[str], List[str]]:
             ["-vf", "format=nv12,hwupload"],
         )
 
-    # 3. AMD AMF (Windows/Proprietary Linux)
+    # 5. AMD AMF (Windows/Proprietary Linux)
     cmd = [
         "ffmpeg",
         "-v",