output redirected to file contains terminal sequences

Checklist

• I’m reporting a bug unrelated to a specific site
• I’ve verified that I’m running yt-dlp version 2022.03.08.1. (update instructions)
• I’ve checked that all provided URLs are alive and playable in a browser
• I’ve checked that all URLs and arguments with special characters are properly quoted or escaped
• I’ve searched the bugtracker for similar issues including closed ones. DO NOT post duplicates
• I’ve read the guidelines for opening an issue

Description

When redirecting yt-dlp’s output to a file terminal sequences are not suppressed. Either at the beginning or the end you will find strings like ]0;yt-dlp Concat started]0;yt-dlp Concat finished.

Prerequisites to reproduce:

• run yt-dlp in POSIX shell ($TERM=xterm-256color)
• use yt-dlp version >= 2022.1.21
• the url must refer to a playlist
• parameter --console-title is set
• parameter --concat-playlist is set to always or multi_video

Verbose log

$ yt-dlp --no-config --verbose --console-title --dump-single-json https://www.youtube.com/channel/UCUBl5r0qPEY7130xVVWv6Zw > dump.json
[debug] Command-line config: ['--no-config', '--verbose', '--console-title', '--dump-single-json', 'https://www.youtube.com/channel/UCUBl5r0qPEY7130xVVWv6Zw']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8 (No ANSI), err utf-8, pref UTF-8
[debug] yt-dlp version 2022.03.08.2 [e491d06d3]
[debug] Python version 3.10.2 (CPython 64bit) - Linux-4.19.104-microsoft-standard-x86_64-with-glibc2.31
[debug] exe versions: ffmpeg 4.2.4, ffprobe 4.2.4
[debug] Optional libraries: brotli, Cryptodome, mutagen, sqlite, websockets
[debug] Proxy map: {}
[debug] [youtube:tab] Extracting URL: https://www.youtube.com/channel/UCUBl5r0qPEY7130xVVWv6Zw
[youtube:tab] UCUBl5r0qPEY7130xVVWv6Zw: Downloading webpage
[youtube:tab] A channel/user page was given. All the channel's videos will be downloaded. To download only the videos in the home page, add a "/featured" to the URL
[debug] [youtube:tab] Final URL: https://www.youtube.com/channel/UCUBl5r0qPEY7130xVVWv6Zw/videos
[download] Downloading playlist: Martin Schulz - Videos
[youtube:tab] playlist Martin Schulz - Videos: Downloading 0 videos
[download] Finished downloading playlist: Martin Schulz - Videos

[pukkandan]

In UNIX, console title is set by sending a code to stdout. I can’t figure out how to change the title when stdout is being piped to a file. So for now, I’ll just forcefully disable --console-title in such cases

[pukkandan]

Perfect. We can catch and check the error number. Due to https://github.com/yt-dlp/yt-dlp/commit/cf4f42cb9776eaa3166d2d234c3ec7651f05d7a9, this is the only thing that’d need to be changed: https://github.com/yt-dlp/yt-dlp/blob/592b748582f67309ac79670ba6a4bb7a62c4506f/yt_dlp/YoutubeDL.py#L548-L549