diff --git a/anime_audio_helper.py b/anime_audio_helper.py
index f09b70e..e3ae843 100644
--- a/anime_audio_helper.py
+++ b/anime_audio_helper.py
@@ -161,7 +161,21 @@ def convert_video(source_file_base, source_file_full, is_vfr, target_cfr_fps_for
 
     # --- SVT-AV1 ENCODING (ffmpeg pipe to SvtAv1EncApp) ---
     print("    - Starting AV1 encode with ffmpeg -> SvtAv1EncApp pipe (this will take a long time)...")
-    svtav1_param_list = []
+    # Probe UTVideo file for width and height
+    ffprobe_dim_cmd = [
+        "ffprobe", "-v", "error", "-select_streams", "v:0",
+        "-show_entries", "stream=width,height", "-of", "json", ut_video_full_path
+    ]
+    ffprobe_dim_json = run_cmd(ffprobe_dim_cmd, capture_output=True)
+    ffprobe_dim = json.loads(ffprobe_dim_json)
+    width = ffprobe_dim['streams'][0]['width']
+    height = ffprobe_dim['streams'][0]['height']
+
+    svtav1_param_list = [
+        f"--width {width}",
+        f"--height {height}",
+        f"--input-depth 10"
+    ]
     for k, v in SVT_AV1_PARAMS.items():
         if isinstance(v, bool):
             v = int(v)
@@ -175,7 +189,7 @@ def convert_video(source_file_base, source_file_full, is_vfr, target_cfr_fps_for
         "-pix_fmt", "yuv420p10le", "-f", "yuv4mpegpipe", "-an", "-sn", "-dn", "-map", "0:v:0", "-"
     ]
     svtav1_cmd = [
-        "SvtAv1EncApp2", "--input", "-", "--output", str(encoded_video_file)
+        "SvtAv1EncApp2", "-i", "-", "-b", str(encoded_video_file)
     ] + svtav1_param_list
 
     print(f"    - Running: {' '.join(ffmpeg_pipe_cmd)} | {' '.join(svtav1_cmd)}")