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Create app.py
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app.py
ADDED
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import os
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import glob
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import gradio as gr
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from moviepy.editor import VideoFileClip, concatenate_videoclips
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import subprocess
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import tempfile
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import shutil
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def get_latest_transition_video():
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"""获取最新生成的过渡视频文件"""
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transition_files = glob.glob('*.mp4')
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if not transition_files:
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raise FileNotFoundError("未找到过渡视频文件")
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latest_file = max(transition_files, key=os.path.getctime)
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return latest_file
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def concatenate_videos(video1_path, video2_path, transition_path, output_path, num_frames, fps):
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"""拼接三个视频部分"""
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clip1 = VideoFileClip(video1_path)
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clip2 = VideoFileClip(video2_path)
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transition = VideoFileClip(transition_path)
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transition_duration = num_frames / fps
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duration1 = clip1.duration - transition_duration
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part1 = clip1.subclip(0, max(0, duration1))
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start_time2 = transition_duration
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part2 = clip2.subclip(min(start_time2, clip2.duration))
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final_clip = concatenate_videoclips([part1, transition, part2])
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final_clip.write_videofile(output_path, codec='libx264', audio_codec='aac')
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clip1.close()
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clip2.close()
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transition.close()
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final_clip.close()
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def get_video_info(video_path):
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"""获取视频信息"""
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clip = VideoFileClip(video_path)
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fps = clip.fps
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duration = clip.duration
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total_frames = int(duration * fps)
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clip.close()
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return fps, duration, total_frames
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def process_videos(video1, video2, animation, num_frames):
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# 创建临时目录
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temp_dir = tempfile.mkdtemp()
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try:
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# 保存上传的视频到临时目录
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video1_path = os.path.join(temp_dir, "video1.mp4")
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video2_path = os.path.join(temp_dir, "video2.mp4")
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shutil.copyfile(video1, video1_path)
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shutil.copyfile(video2, video2_path)
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# 获取视频信息
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fps1, duration1, frames1 = get_video_info(video1_path)
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fps2, duration2, frames2 = get_video_info(video2_path)
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# 使用两个视频中较小的FPS
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fps = min(fps1, fps2)
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# 计算最大可用帧数
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max_possible_frames = min(
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int(duration1 * fps),
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int(duration2 * fps)
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)
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num_frames = min(num_frames, max_possible_frames)
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# 1. 生成过渡部分
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transition_cmd = [
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"python", "vid_transition.py",
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"-i", video1_path, video2_path,
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"--animation", animation,
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"--num_frames", str(num_frames),
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"--max_brightness", "1.5",
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"-m", "y"
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]
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subprocess.run(transition_cmd, check=True)
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# 2. 获取过渡视频
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transition_path = get_latest_transition_video()
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# 3. 拼接视频
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output_path = os.path.join(temp_dir, "output.mp4")
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concatenate_videos(video1_path, video2_path, transition_path, output_path, num_frames, fps)
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return output_path
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except Exception as e:
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raise gr.Error(f"处理视频时出错: {str(e)}")
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finally:
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# 清理临时目录
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shutil.rmtree(temp_dir, ignore_errors=True)
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def validate_inputs(video1, video2, num_frames):
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"""验证输入参数"""
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if not video1 or not video2:
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raise gr.Error("请上传两个视频文件")
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try:
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fps1, duration1, frames1 = get_video_info(video1)
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fps2, duration2, frames2 = get_video_info(video2)
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except:
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raise gr.Error("上传的视频文件无效")
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fps = min(fps1, fps2)
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max_possible_frames = min(frames1, frames2)
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if num_frames > max_possible_frames:
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raise gr.Error(f"视频太短,最大可用过渡帧数为: {max_possible_frames}")
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return fps, max_possible_frames
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def process_and_validate(video1, video2, animation, num_frames):
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try:
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fps, max_frames = validate_inputs(video1, video2, num_frames)
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if num_frames > max_frames:
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num_frames = max_frames
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gr.Info(f"自动调整过渡帧数为: {num_frames}")
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output_path = process_videos(video1, video2, animation, num_frames)
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return output_path
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except Exception as e:
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raise gr.Error(str(e))
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# 创建Gradio界面
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with gr.Blocks(title="视频过渡与拼接工具") as demo:
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gr.Markdown("""
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# 视频过渡与拼接工具
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上传两个视频,选择过渡效果,生成平滑过渡的合并视频。
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""")
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with gr.Row():
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with gr.Column():
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video1 = gr.Video(label="第一个视频")
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video2 = gr.Video(label="第二个视频")
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animation = gr.Dropdown(
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label="过渡动画效果",
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choices=[
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'translation', 'translation_inv',
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'rotation', 'rotation_inv',
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'zoom_in', 'zoom_out',
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'long_translation', 'long_translation_inv'
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],
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value='translation'
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)
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num_frames = gr.Slider(
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label="过渡帧数",
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minimum=10,
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maximum=100,
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step=5,
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value=30,
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info="会根据视频长度自动调整"
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)
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submit_btn = gr.Button("生成过渡视频", variant="primary")
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with gr.Column():
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output_video = gr.Video(label="合并后的视频")
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info_box = gr.Textbox(label="处理信息", visible=False)
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submit_btn.click(
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fn=process_and_validate,
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inputs=[video1, video2, animation, num_frames],
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outputs=output_video
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)
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# 示例部分 - 使用0000.mp4和0001.mp4展示所有动画效果
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examples = []
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animations = [
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'translation', 'translation_inv',
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'rotation', 'rotation_inv',
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'zoom_in', 'zoom_out',
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'long_translation', 'long_translation_inv'
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]
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for anim in animations:
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examples.append([
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"examples/0000.mp4",
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"examples/0001.mp4",
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anim,
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30 # 使用30帧作为示例
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])
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gr.Examples(
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examples=examples,
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inputs=[video1, video2, animation, num_frames],
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outputs=output_video,
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fn=process_and_validate,
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cache_examples=True,
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label="点击示例快速体验不同过渡效果"
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)
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if __name__ == "__main__":
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demo.launch(share = True)
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