以编程方式确定视频文件格式？

from moviepy.editor import *
video = VideoFileClip("test.mp4").subclip(0, 5)
video.write_videofile("test_format.mp4")

const ffmpeg = require("ffmpeg-parse");
const formatInfo = ffmpeg.parse("test.mp4");
console.log(formatInfo);

using Ffmpeg.Net.FFmpegInterop;

FFmpegInterop.FfmpegState ffState = FFmpegInterop.FfmpegState.Create(FFmpegInterop.FfmpegPath.ffmpegPath());

string output = ffState.MediaInfo("test.mp4").AsStream().AsString();

shell_exec("ffprobe -v error -show_entries packet=stream_type -of csv=p=0 input.mp4> streamtype.txt");
$streamtype = file_get_contents("streamtype.txt");
echo "Stream type: " . $streamtype;