diff --git a/pyproject.toml b/pyproject.toml
index f316b89..e853373 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "comfyui-videohelpersuite"
 description = "Nodes related to video workflows"
-version = "1.5.18"
+version = "1.5.19"
 license = { file = "LICENSE" }
 dependencies = ["opencv-python", "imageio-ffmpeg"]
 
diff --git a/video_formats/nvenc_av1-mp4.json b/video_formats/nvenc_av1-mp4.json
new file mode 100644
index 0000000..0996c65
--- /dev/null
+++ b/video_formats/nvenc_av1-mp4.json
@@ -0,0 +1,15 @@
+{
+    "main_pass":
+    [
+        "-n", "-c:v", "av1_nvenc",
+        "-pix_fmt", ["pix_fmt", ["yuv420p", "p010le"]],
+        "-vf", "scale=out_color_matrix=bt709",
+        "-color_range", "tv", "-colorspace", "bt709", "-color_primaries", "bt709", "-color_trc", "bt709"
+    ],
+    "fake_trc": "bt709",
+    "audio_pass": ["-c:a", "aac"],
+    "bitrate": ["bitrate","INT", {"default": 10, "min": 1, "max": 999, "step": 1 }],
+    "megabit": ["megabit","BOOLEAN", {"default": true}],
+    "save_metadata": ["save_metadata", "BOOLEAN", {"default": true}],
+    "extension": "mp4"
+}
diff --git a/video_formats/nvenc_h264-mp4.json b/video_formats/nvenc_h264-mp4.json
index 20d9719..1c39913 100644
--- a/video_formats/nvenc_h264-mp4.json
+++ b/video_formats/nvenc_h264-mp4.json
@@ -2,7 +2,7 @@
     "main_pass":
     [
         "-n", "-c:v", "h264_nvenc",
-        "-pix_fmt", ["pix_fmt", ["yuv420p", "yuv420p10le"]],
+        "-pix_fmt", ["pix_fmt", ["yuv420p", "p010le"]],
         "-vf", "scale=out_color_matrix=bt709",
         "-color_range", "tv", "-colorspace", "bt709", "-color_primaries", "bt709", "-color_trc", "bt709"
     ],
diff --git a/video_formats/nvenc_hevc-mp4.json b/video_formats/nvenc_hevc-mp4.json
index eabb278..2ec6f41 100644
--- a/video_formats/nvenc_hevc-mp4.json
+++ b/video_formats/nvenc_hevc-mp4.json
@@ -3,7 +3,7 @@
     [
         "-n", "-c:v", "hevc_nvenc",
         "-vtag", "hvc1",
-        "-pix_fmt", ["pix_fmt", ["yuv420p", "yuv420p10le"]],
+        "-pix_fmt", ["pix_fmt", ["yuv420p", "p010le"]],
         "-vf", "scale=out_color_matrix=bt709",
         "-color_range", "tv", "-colorspace", "bt709", "-color_primaries", "bt709", "-color_trc", "bt709"
     ],
diff --git a/videohelpersuite/nodes.py b/videohelpersuite/nodes.py
index e2301cf..2b666ad 100755
--- a/videohelpersuite/nodes.py
+++ b/videohelpersuite/nodes.py
@@ -478,7 +478,8 @@ class VideoCombine:
                     raise Exception("Formats which require a pre_pass are incompatible with Batch Manager.")
                 images = [b''.join(images)]
                 os.makedirs(folder_paths.get_temp_directory(), exist_ok=True)
-                pre_pass_args = args[:13] + video_format['pre_pass']
+                in_args_len = args.index("-i") + 2 # The index after ["-i", "-"]
+                pre_pass_args = args[:in_args_len] + video_format['pre_pass']
                 merge_filter_args(pre_pass_args)
                 try:
                     subprocess.run(pre_pass_args, input=images[0], env=env,
@@ -487,7 +488,8 @@ class VideoCombine:
                     raise Exception("An error occurred in the ffmpeg prepass:\n" \
                             + e.stderr.decode(*ENCODE_ARGS))
             if "inputs_main_pass" in video_format:
-                args = args[:13] + video_format['inputs_main_pass'] + args[13:]
+                in_args_len = args.index("-i") + 2 # The index after ["-i", "-"]
+                args = args[:in_args_len] + video_format['inputs_main_pass'] + args[in_args_len:]
 
             if output_process is None:
                 if 'gifski_pass' in video_format: