下面的程序调用subprocess.run()来调用一个程序（ffprobe，但这并不重要）并在STDOUT中返回一个CSV结果。

import os
import subprocess
import csv

for file in os.listdir("/Temp/Video"):
    if file.endswith(".mkv"):
        print(os.path.join("/Temp/Video", file))
        ps = subprocess.run(["ffprobe", "-show_streams", "-print_format", "csv",  "-i", "/Temp/Video/" + file], capture_output = True)
        print(ps.stdout)
        reader = csv.reader(ps.stdout)
        results = []
        for row in reader:
            results.append(row)

产生以下错误：

Traceback (most recent call last):
  File "C:\Users\mbmas\eclipse-workspace\DolbyAtmosToFlac\com\mbm\main.py", line 12, in <module>
    for row in reader:
_csv.Error: iterator should return strings, not int (the file should be opened in text mode)

print(ps.stdout)语句的输出将生成：

b'stream,0,h264,H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10,High,video,[0][0][0][0],0x0000,1920,1080,1920,1080,0,0,2,1:1,16:9,yuv420p,40,unknown,unknown,unknown,unknown,left,progressive,1,true,4,N/A,24000/1001,24000/1001,1/1000,0,0.000000,N/A,N/A,N/A,N/A,8,N/A,N/A,N/A,46,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,eng,17936509,01:20:18.271791666,115523,10802870592,001011,MakeMKV v1.16.4 win(x64-release),2021-08-20 19:09:26,BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID,Lavc59.7.102 libx264,00:01:30.010000000\r\nstream,1,vorbis,Vorbis,unknown,audio,[0][0][0][0],0x0000,fltp,48000,3,3.0,0,0,N/A,0/0,0/0,1/1000,0,0.000000,N/A,N/A,N/A,N/A,N/A,N/A,N/A,N/A,3314,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,eng,Surround 3.0,2422660,01:20:18.272000000,451713,1459129736,001100,MakeMKV v1.16.4 win(x64-release),2021-08-20 19:09:26,BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID,Lavc59.7.102 libvorbis,00:01:30.003000000\r\n'

Python提供的建议，* 文件应该以文本模式打开 *，令人困惑。上面的输出看起来像文本。我如何使用csv模块读取保存在流中的CSV数据？