| 1 | import logging |
| 2 | import requests |
| 3 | from moviepy import VideoFileClip, concatenate_videoclips |
| 4 | from utils.retry import download_retry |
| 5 | |
| 6 | |
| 7 | @download_retry |
| 8 | def download_video(url, save_path): |
| 9 | try: |
| 10 | logging.info(f"Downloading video from {url} to {save_path}") |
| 11 | |
| 12 | response = requests.get(url, stream=True, timeout=(10, 300)) |
| 13 | response.raise_for_status() # 检查请求是否成功 |
| 14 | |
| 15 | with open(save_path, 'wb') as f: |
| 16 | for chunk in response.iter_content(chunk_size=8192): |
| 17 | f.write(chunk) |
| 18 | |
| 19 | logging.info(f"Video downloaded successfully to {save_path}") |
| 20 | |
| 21 | except Exception as e: |
| 22 | logging.error(f"Error downloading video: {e}") |
| 23 | raise e |
| 24 | |
| 25 | |
| 26 | def concatenate_video_files(video_paths, output_path, codec="libx264", preset="medium"): |
| 27 | """Concatenate video files, releasing every ffmpeg reader even on failure. |
| 28 | |
| 29 | Each VideoFileClip keeps an ffmpeg subprocess and file handle open until |
| 30 | closed; leaking them exhausts file descriptors on long multi-scene runs. |
| 31 | """ |
| 32 | clips = [] |
| 33 | final = None |
| 34 | try: |
| 35 | for path in video_paths: |
| 36 | clips.append(VideoFileClip(path)) |
| 37 | final = concatenate_videoclips(clips) |
| 38 | final.write_videofile(output_path, codec=codec, preset=preset) |
| 39 | finally: |
| 40 | if final is not None: |
| 41 | final.close() |
| 42 | for clip in clips: |
| 43 | clip.close() |
| 44 | return output_path |
| 45 |