From 028e17dd7a5e54acc8f5417a6faad2eec196f0cc Mon Sep 17 00:00:00 2001
From: Alexander Piskun <13381981+bigcat88@users.noreply.github.com>
Date: Tue, 2 Dec 2025 21:50:13 +0200
Subject: [PATCH 1/2] add check for the format arg type in
 VideoFromComponents.save_to function (#11046)

* add check for the format var type in VideoFromComponents.save_to function

* convert "format" to VideoContainer enum
---
 comfy_api/latest/_input_impl/video_types.py | 2 +-
 comfy_extras/nodes_video.py                 | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/comfy_api/latest/_input_impl/video_types.py b/comfy_api/latest/_input_impl/video_types.py
index 7231bf13c..a4cd3737d 100644
--- a/comfy_api/latest/_input_impl/video_types.py
+++ b/comfy_api/latest/_input_impl/video_types.py
@@ -337,7 +337,7 @@ class VideoFromComponents(VideoInput):
         if codec != VideoCodec.AUTO and codec != VideoCodec.H264:
             raise ValueError("Only H264 codec is supported for now")
         extra_kwargs = {}
-        if format != VideoContainer.AUTO:
+        if isinstance(format, VideoContainer) and format != VideoContainer.AUTO:
             extra_kwargs["format"] = format.value
         with av.open(path, mode='w', options={'movflags': 'use_metadata_tags'}, **extra_kwargs) as output:
             # Add metadata before writing any streams
diff --git a/comfy_extras/nodes_video.py b/comfy_extras/nodes_video.py
index 69fabb12e..6cf6e39bf 100644
--- a/comfy_extras/nodes_video.py
+++ b/comfy_extras/nodes_video.py
@@ -88,7 +88,7 @@ class SaveVideo(io.ComfyNode):
         )
 
     @classmethod
-    def execute(cls, video: VideoInput, filename_prefix, format, codec) -> io.NodeOutput:
+    def execute(cls, video: VideoInput, filename_prefix, format: str, codec) -> io.NodeOutput:
         width, height = video.get_dimensions()
         full_output_folder, filename, counter, subfolder, filename_prefix = folder_paths.get_save_image_path(
             filename_prefix,
@@ -108,7 +108,7 @@ class SaveVideo(io.ComfyNode):
         file = f"{filename}_{counter:05}_.{VideoContainer.get_extension(format)}"
         video.save_to(
             os.path.join(full_output_folder, file),
-            format=format,
+            format=VideoContainer(format),
             codec=codec,
             metadata=saved_metadata
         )

From 59afc3984868289f808d02fa5cd180edfb2de240 Mon Sep 17 00:00:00 2001
From: comfyanonymous <comfyanonymous@protonmail.com>
Date: Wed, 3 Dec 2025 00:02:09 -0500
Subject: [PATCH 2/2] ComfyUI v0.3.77

---
 comfyui_version.py | 2 +-
 pyproject.toml     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/comfyui_version.py b/comfyui_version.py
index 4b039356e..6436b84f9 100644
--- a/comfyui_version.py
+++ b/comfyui_version.py
@@ -1,3 +1,3 @@
 # This file is automatically generated by the build process when version is
 # updated in pyproject.toml.
-__version__ = "0.3.76"
+__version__ = "0.3.77"
diff --git a/pyproject.toml b/pyproject.toml
index 02b94a0ce..422c3ee8a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ComfyUI"
-version = "0.3.76"
+version = "0.3.77"
 readme = "README.md"
 license = { file = "LICENSE" }
 requires-python = ">=3.9"