如何在Maya中使用Python实现同帧范围摄影机的多镜头文件规范命名导出

Alright, let's tackle this Maya camera export task with Python. I'll walk you through a practical solution that matches your naming rules and handles multiple shot ranges per camera. Here's how to make it work:

First, let's clarify the key requirements we need to cover:

• Identify target cameras in the Maya scene
• Handle multiple shot time ranges per camera
• Generate filenames following your specified format (camName_shotName_start-end.fbx)
• Export each camera-shot combination as a separate FBX file with the correct timeline range

Here's a ready-to-use script that you can adapt to your scene:

import maya.cmds as cmds
import os

# --------------------------
# Configuration - Update this section for your scene
# --------------------------
# Define cameras and their associated shot ranges: {camera_name: [(shot_name, start_frame, end_frame), ...]}
camera_shot_ranges = {
    "cam1": [("shot1", 10, 35), ("shot2", 10, 35)],
    "cam2": [("shot1", 34, 64), ("shot2", 34, 64)]
}
# Set your target export folder (replace with your own path)
export_directory = "C:/Maya_Exported_Shots"

# --------------------------
# Export Logic
# --------------------------
# Create export folder if it doesn't exist
if not os.path.exists(export_directory):
    os.makedirs(export_directory)
    print(f"Created export directory: {export_directory}")

# Iterate over each camera and its shots
for camera_name, shot_list in camera_shot_ranges.items():
    # Skip if the camera doesn't exist in the scene
    if not cmds.objExists(camera_name):
        print(f"⚠️ Warning: Camera '{camera_name}' not found in scene - skipping.")
        continue
    
    # Select the camera to ensure we export only its data (adjust if you need to include other objects)
    cmds.select(camera_name, replace=True)
    
    # Process each shot range for the camera
    for shot_name, start_frame, end_frame in shot_list:
        # Validate frame range (prevent invalid exports)
        if start_frame >= end_frame:
            print(f"⚠️ Invalid frame range for {camera_name}_{shot_name}: {start_frame}-{end_frame} - skipping.")
            continue
        
        # Generate the formatted filename
        output_filename = f"{camera_name}_{shot_name}_{start_frame}-{end_frame}.fbx"
        full_export_path = os.path.join(export_directory, output_filename)
        
        # Configure FBX export settings for animation and frame range
        cmds.FBXExportAnimationOnly(True)  # Export only animation data
        cmds.FBXExportFrameRange(min=start_frame, max=end_frame)  # Set the shot's timeline range
        
        # Execute the export
        try:
            cmds.FBXExport(file=full_export_path, selected=True)
            print(f"✅ Successfully exported: {full_export_path}")
        except Exception as export_error:
            print(f"❌ Failed to export {full_export_path}: {str(export_error)}")

Let's break down what the script does and how you can tweak it:

1. Configuration Section:

   • The camera_shot_ranges dictionary lets you map each camera to its shot ranges. Update this to match your scene's cameras and shot timings.
   • Set export_directory to your preferred output folder. The script will create this folder if it doesn't exist.

2. Validation Checks:

   • The script checks if the camera exists in the scene to avoid errors.
   • It validates that the start frame is less than the end frame to skip invalid shot ranges.

3. FBX Export Settings:

   • FBXExportAnimationOnly(True) ensures we only export the camera's animation (not static geometry, unless you modify the selection).
   • FBXExportFrameRange sets the exact timeline range for each shot.
   • selected=True tells Maya to export only the currently selected object (the camera) — if you need to include other assets (like a character or props), add them to the selection before exporting.

4. Naming Logic:

   • The filename is built using an f-string that strictly follows your requested format: {camera_name}_{shot_name}_{start_frame}-{end_frame}.fbx.

If you want to take this further, here are some useful additions:

• Auto-Detect Shot Ranges: Instead of manually defining camera_shot_ranges, you can read Maya's timeline markers to automatically pull shot names and frame ranges.
• Batch Export Multiple Objects: Modify the selection logic to include groups of objects (e.g., a camera + a linked character rig) for each shot.
• Log File: Write export success/failure details to a text log file for easier tracking of large batches.

内容的提问来源于stack exchange，提问作者mayjackass