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降低视频帧数#xff0c;简单的操作只能降低视频帧数#xff0c;如果要增加视频帧数#xff0c;那就要使用深度学习进行插帧处理#xff1a;
import cv2
from moviepy.editor import *
def change_fps(inpt_path,output_path,fps):# 加载视频video Video…1.更改视频帧数
降低视频帧数简单的操作只能降低视频帧数如果要增加视频帧数那就要使用深度学习进行插帧处理
import cv2
from moviepy.editor import *
def change_fps(inpt_path,output_path,fps):# 加载视频video VideoFileClip(inpt_path)# 将帧率降低为15帧/秒new_video video.set_fps(fps)# 保存为新的文件new_video.write_videofile(output_path, codeclibx264)def change_fps_dir(video_dir,fps):file_list os.listdir(video_dir)for file in file_list:# 使用os.path.basename()获取文件名包括后缀file_name os.path.basename(file)out_name F file_nameinput os.path.join(video_dir,file_name)output os.path.join(video_dir,out_name)change_fps(input,output,fps)2.把视频拆分成帧保存
def split_video(video_path,save_path):# 创建输出目录os.makedirs(save_path, exist_okTrue)# 打开视频文件cap cv2.VideoCapture(video_path)frame_count 0# 读取视频帧并保存为图像while True:ret, frame cap.read()if not ret:break# 生成输出图像文件名frame_filename os.path.join(save_path, f{frame_count:05d}.jpg)frame_count 1# 保存帧图像cv2.imwrite(frame_filename, frame)# 释放视频文件cap.release()print(f总共保存了 {frame_count} 帧图像)3.把拆分图像合成视频
def img_video_merge(img_dir,video_path,frame_rate):file_list os.listdir(img_dir)cv_src cv2.imread(os.path.join(img_dir,file_list[0]))fourcc cv2.VideoWriter_fourcc(*mp4v) # 使用H.264编解码器height, width, channels cv_src.shape# 帧速率和帧大小frame_size (width, height)# 创建VideoWriter对象out cv2.VideoWriter(video_path, fourcc, frame_rate, frame_size)for file in file_list:cv_dst cv2.imread(os.path.join(img_dir, file))out.write(cv_dst)4.提取视频的音轨
def video_to_audio(video_path,audio_path):video VideoFileClip(video_path)audio video.audioaudio_temp temp.wavif os.path.exists(audio_path):os.remove(audio_temp)audio.write_audiofile(audio_temp)audio.close()if os.path.exists(audio_path):os.remove(audio_path)cmd ffmpeg -i audio_temp -ac 1 -ar 16000 audio_pathsubprocess.run(cmd,shellTrue)
5.视频与音轨合并
from moviepy.editor import VideoFileClip, AudioFileClip# 读取视频和音轨
video_clip VideoFileClip(video.mp4) # 替换为您的视频文件
audio_clip AudioFileClip(audio.mp3) # 替换为您的音轨文件# 将音轨添加到视频
video_clip video_clip.set_audio(audio_clip)# 保存合并后的视频
output_video_path output_video.mp4
video_clip.write_videofile(output_video_path, codeclibx264)# 关闭视频和音轨文件
video_clip.close()
audio_clip.close()print(f已将音轨成功合并到视频并保存为 {output_video_path})6.视频合并
def image_stitching(images,stack):height, width, channels images[0].shape# 遍历所有图像如果尺寸不同将它们调整为相同的尺寸for i in range(1, len(images)):if images[i].shape ! (height, width, channels):images[i] cv2.resize(images[i], (width, height))if stack 0:result np.hstack(images)else:result np.vstack(images)return result#stack为0是水平合并等于1是垂直合并
def video_stitching(video_path_1,video_path_2,output_path,stack):cap1 cv2.VideoCapture(video_path_1)cap2 cv2.VideoCapture(video_path_2)if stack 0:frame_width int(cap1.get(3)) * 2frame_height int(cap1.get(4))elif stack 1:frame_width int(cap1.get(3))frame_height int(cap1.get(4)) * 2fourcc cv2.VideoWriter_fourcc(m, p, 4, v)out cv2.VideoWriter(output_path, fourcc, 25, (frame_width, frame_height))while (True):ret1, frame1 cap1.read()ret2, frame2 cap2.read()if ret1 and ret2 True:images [frame1, frame2]dst image_stitching(images,stack)out.write(dst)else:breakcap1.release()cap2.release()out.release()
