fix: add h264-mp4 format parameters to VHS_VideoCombine

- Add required format-specific parameters: pix_fmt, crf, save_metadata, trim_to_audio
- Values: [8, 0, 'cogvideox_output', 'video/h264-mp4', 'yuv420p', 19, true, false]
- Fixes red node error in ComfyUI UI

comfyui/workflows/image-to-video/cogvideox-i2v-production-v1.json

@@ -286,7 +286,7 @@
       "type": "VHS_VideoCombine",
       "pos": [1600, 100],
       "size": [315, 200],
-      "widgets_values": [8, 0, "cogvideox_output", "video/h264-mp4"],
+      "widgets_values": [8, 0, "cogvideox_output", "video/h264-mp4", "yuv420p", 19, true, false],
       "title": "Combine Video Frames",
       "flags": {},
       "order": 9,