Step 5: Merge all section videos
(self, output_filename: str = None)
| 665 | return results |
| 666 | |
| 667 | def merge_videos(self, output_filename: str = None) -> str: |
| 668 | """Step 5: Merge all section videos""" |
| 669 | if not self.section_videos: |
| 670 | raise ValueError("No video files available to merge") |
| 671 | |
| 672 | if output_filename is None: |
| 673 | safe_name = topic_to_safe_name(self.learning_topic) |
| 674 | output_filename = f"{safe_name}.mp4" |
| 675 | |
| 676 | output_path = self.output_dir / output_filename |
| 677 | |
| 678 | print(f"🔗 Start merging section videos...") |
| 679 | |
| 680 | video_list_file = self.output_dir / "video_list.txt" |
| 681 | with open(video_list_file, "w", encoding="utf-8") as f: |
| 682 | for section_id in sorted(self.section_videos.keys()): |
| 683 | video_path = self.section_videos[section_id].replace(f"{self.output_dir}/", "") |
| 684 | f.write(f"file '{video_path}'\n") |
| 685 | |
| 686 | # ffmpeg |
| 687 | try: |
| 688 | result = subprocess.run( |
| 689 | ["ffmpeg", "-y", "-f", "concat", "-safe", "0", "-i", str(video_list_file), "-c", "copy", str(output_path)], |
| 690 | capture_output=True, |
| 691 | text=True, |
| 692 | ) |
| 693 | |
| 694 | if result.returncode == 0: |
| 695 | return str(output_path) |
| 696 | else: |
| 697 | print(f"❌ Failed to merge section videos: {result.stderr}") |
| 698 | return None |
| 699 | except Exception as e: |
| 700 | print(f"❌ Failed to merge section videos: {e}") |
| 701 | return None |
| 702 | |
| 703 | def GENERATE_VIDEO(self) -> str: |
| 704 | """Generate complete video with MLLM feedback optimization""" |
no test coverage detected