拼接合并yuv序列转成mp4

 ffmpeg需要用支持libx264的版本，如果需要，可以从这个网站下载编译支持libx264\x265的ffmpeg

https://www.gyan.dev/ffmpeg/builds/packages/ffmpeg-6.1-essentials_build.7z

#-*- coding:utf-8-*-
import os


if __name__ == "__main__":
    # 1 输入想要合并序列，按顺序放
    input_w = 2560
    input_h = 1440
    input_seqs = [
                r"D:\input\\2_2k_420.yuv",
                r"D:\input\\4_2k_420.yuv", 
                r"D:\input\\10_2K_420.yuv", ]
    # 2 每个yuv转码成mp44
    ffmpeg_trans_param = "ffmpeg -y -f rawvideo -video_size %sx%s -pixel_format yuv420p -i %s \
                            -c:v libx264 -q 10 %d_out.mp4"
    if os.path.exists("concat_list.txt"):
        os.remove("concat_list.txt")
    f_concat = open("concat_list.txt","a")

    for i in range(0,len(input_seqs)):
        cur_cmd = ffmpeg_trans_param %( input_w, input_h, input_seqs[i], i)
        os.system(cur_cmd)
        write_info = "file %d_out.mp4\n" % ( i)
        f_concat.write(write_info)
    f_concat.close()
    
    # 3 按顺序合并所有mp4文件
    
    cur_cmd = "ffmpeg -y -hide_banner -f concat -i concat_list.txt -c:v copy  concat_total.mp4"
    os.system(cur_cmd)