Python实现视频mp4垂直和水平拼接

import imageio
import numpy as np
import os
import cv2
 
def pinjie_v(dir1,dir2,out_dir):
 
    os.makedirs(out_dir, exist_ok=true)
    # 获取目录下的所有视频文件
    video_files_1 = [f for f in os.listdir(dir1) if f.endswith('.mp4')]
    video_files_2 = [f for f in os.listdir(dir2) if f.endswith('.mp4')]
 
    # 确保两个目录下的视频文件是同名的
    common_files = set(video_files_1).intersection(video_files_2)
 
    # 如果没有同名视频，退出
    if not common_files:
        print("没有同名的视频文件。")
        exit()
 
    for video_name in common_files:
        print(f"处理视频: {video_name}")
 
        # if "user-4fd103ee-38d4-43c5-bb2a-f496d2fe065e" not in video_name:
        #     continue
        # 打开视频文件
        video_path_1 = os.path.join(dir1, video_name)
        video_path_2 = os.path.join(dir2, video_name)
 
        reader1 = imageio.get_reader(video_path_1)
        reader2 = imageio.get_reader(video_path_2)
 
        # 获取视频信息（假设两个视频有相同帧数）
        fps = reader1.get_meta_data()['fps']
        num_frames = min(reader1.count_frames(), reader2.count_frames())
 
        # 创建输出文件
        output_path = os.path.join(out_dir, f"v_{video_name}")
        # writer = imageio.get_writer(output_path, fps=fps)
        if os.path.exists(output_path):
            continue
        outs = []
        # 逐帧处理
        for i in range(num_frames):
            frame1 = reader1.get_data(i)
            frame2 = reader2.get_data(i)
 
            # 获取帧的高度和宽度
            height1, width1, _ = frame1.shape
            height2, width2, _ = frame2.shape
            if height1 > width1:
                if height1 != height2:
                    y_scale = height1 / height2
                    frame2 = cv2.resize(frame2, (int(width2 * y_scale), height1), interpolation=cv2.inter_area)
            elif height1 <= width1:
                if width1 != width2:
                    x_scale = width1 / width2
                    frame2 = cv2.resize(frame2, (width1, int(height2 * x_scale)), interpolation=cv2.inter_area)
 
            if height1 > width1:
                frame = np.hstack([frame1, frame2])
            else:
                frame = np.vstack([frame1, frame2])
 
            outs.append(frame)
        try:
            imageio.mimsave(f'{output_path}', outs, fps=fps, macro_block_size=none)
        except exception as e:
            print(e)
        # writer.close()
        print(f"视频 {video_name} 拼接完成，保存在 {output_path}")
 
if __name__ == '__main__':
 
    # 设置目录路径
    dir1 = r'e:\project\smpl\render_blender\linux\hmr_res'
    dir2 = r'e:\project\smpl\render_blender\linux\hmr2_res'
 
    dir1 = r'e:\project\smpl\render_blender\linux\val_out_depth_any_color'
    dir2 = r'e:\project\smpl\render_blender\linux\val_out_video'
 
    dir1 = r'e:\project\smpl\render_blender\linux\val_out_depth_any_color'
    dir2 = r'e:\project\smpl\render_blender\linux\val_out_video'
 
    dir1=r'e:\project\smpl\render_blender\linux\test_lbg_o'
    dir2 =r'e:\project\smpl\render_blender\linux\test_lbg6'
 
    out_dir = 'track_diff'
    pinjie_v(dir1,dir2,out_dir)

#!/user/bin/env python
# coding=utf-8
"""
@project : csdn
@author  : 剑客阿良_aliang
@file   : concat_video.py
@ide    : pycharm
@time   : 2021-12-23 15:23:16
"""
  
from ffmpy import ffmpeg
import os
import uuid
import subprocess
  
  
# 视频拼接
def concat(video_list: list, output_dir: str):
    if len(video_list) == 0:
        raise exception('video_list can not empty')
    _ext = check_format(video_list)
    _fps = check_fps(video_list)
    _result_path = os.path.join(
        output_dir, '{}{}'.format(
            uuid.uuid1().hex, _ext))
    _tmp_config = make_tmp_concat_config(video_list, output_dir)
    ff = ffmpeg(inputs={'{}'.format(_tmp_config): '-f concat -safe 0 -y'}, outputs={
        _result_path: '-c copy'})
    print(ff.cmd)
    ff.run()
    os.remove(_tmp_config)
    return _result_path
  
  
# 构造拼接所需临时文件
def make_tmp_concat_config(video_list: list, output_dir: str):
    _tmp_concat_config_path = os.path.join(output_dir, '{}.txt'.format(uuid.uuid1().hex))
    with open(_tmp_concat_config_path, mode='w', encoding='utf-8') as f:
        f.writelines(list(map(lambda x: 'file {}\n'.format(x), video_list)))
    return _tmp_concat_config_path
  
  
# 校验每个视频的格式
def check_format(video_list: list):
    _video_format = ''
    for x in video_list:
        _ext = os.path.splitext(x)[-1]
        if _video_format == '' and _ext != '':
            _video_format = _ext
            continue
        if _video_format != '' and _ext == _video_format:
            continue
        if _video_format != '' and _ext != _video_format:
            raise exception('inconsistent video format')
    return _video_format
  
  
# 校验每个视频的fps
def check_fps(video_list: list):
    _video_fps = 0
    for x in video_list:
        _fps = get_video_fps(x)
        if _video_fps == 0 and _fps:
            _video_fps = _fps
            continue
        if _video_fps != 0 and _fps == _video_fps:
            continue
        if _video_fps != '' and _fps != _video_fps:
            raise exception('inconsistent video fps')
    if _video_fps == 0:
        raise exception('video fps error')
    return _video_fps
  
  
# 获取视频fps
def get_video_fps(video_path: str):
    ext = os.path.splitext(video_path)[-1]
    if ext != '.mp4' and ext != '.avi' and ext != '.flv':
        raise exception('format not support')
    ffprobe_cmd = 'ffprobe -v error -select_streams v -of default=noprint_wrappers=1:nokey=1 -show_entries stream=r_frame_rate {}'
    p = subprocess.popen(
        ffprobe_cmd.format(video_path),
        stdout=subprocess.pipe,
        stderr=subprocess.pipe,
        shell=true)
    out, err = p.communicate()
    print("subprocess 执行结果：out:{} err:{}".format(out, err))
    fps_info = str(out, 'utf-8').strip()
    if fps_info:
        if fps_info.find("/") > 0:
            video_fps_str = fps_info.split('/', 1)
            fps_result = int(int(video_fps_str[0]) / int(video_fps_str[1]))
        else:
            fps_result = int(fps_info)
    else:
        raise exception('get fps error')
    return fps_result
  
  
if __name__ == '__main__':
    print(concat(['d:/tmp/100.mp4', 'd:/tmp/101.mp4'], 'c:/users/huyi/desktop'))