Add ComfyUI HighSync nodes

highsync_wrapper/ffmpeg_utils.py

@@ -0,0 +1,45 @@
+import shutil
+import subprocess
+
+from .file_utils import resolve_path
+
+
+def check_ffmpeg():
+    ffmpeg = shutil.which("ffmpeg") or shutil.which("ffmpeg.exe")
+    if ffmpeg is None:
+        raise RuntimeError("ffmpeg not found. Please install ffmpeg and add it to PATH.")
+    return ffmpeg
+
+
+def run_ffmpeg(args, error_label):
+    command = [check_ffmpeg()] + [str(arg) for arg in args]
+    result = subprocess.run(command, capture_output=True, text=True)
+    if result.returncode != 0:
+        stderr = result.stderr.strip()
+        raise RuntimeError(f"{error_label} failed with exit code {result.returncode}: {stderr}")
+
+
+def mux_video_audio(video_path, audio_path, output_path):
+    output_file = resolve_path(output_path)
+    output_file.parent.mkdir(parents=True, exist_ok=True)
+    run_ffmpeg(
+        [
+            "-y",
+            "-i",
+            resolve_path(video_path),
+            "-i",
+            resolve_path(audio_path),
+            "-map",
+            "0:v:0",
+            "-map",
+            "1:a:0",
+            "-c:v",
+            "copy",
+            "-c:a",
+            "aac",
+            "-shortest",
+            output_file,
+        ],
+        "audio/video mux",
+    )
+    return output_file