Youtube-dl downloads two formats of same video

Checklist

• [X ] I’m reporting a broken site support issue
• [X ] I’ve verified that I’m running youtube-dl version 2021.06.06
• [X ] I’ve checked that all provided URLs are alive and playable in a browser
• [X ] I’ve checked that all URLs and arguments with special characters are properly quoted or escaped
• [X ] I’ve searched the bugtracker for similar bug reports including closed ones
• [X ] I’ve read bugs section in FAQ

Verbose log

Below is the command I run when I want to download a few videos,

while ! youtube-dl --verbose -a 11ú\ Méan\ Fómhair.txt -c --socket-timeout 5; do echo DISCONNECTED; sleep 5; done                                               

Usually, I go to my YT subscriptions & copy the URLs of the videos I want to watch and save them in a text file, then I execute the above command that reconnects if I get disconnected until all videos are downloaded.

Below is a verbose log of a download

 

 ~/Íosluchtuithe  while ! youtube-dl --verbose -a 11ú\ Méan\ Fómhair.txt -c --socket-timeout 5; do echo DISCONNECTED; sleep 5; done                             INT х  took 14s  at 14:23:43 
[debug] System config: []
[debug] User config: ['-o', '~/Físeáin/Íosluchtuithe/%(title)s.%(ext)s', '-f', 'bestvideo[height<=1080]+bestaudio/best[height<=1080]']
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '-a', '11ú Méan Fómhair.txt', '-c', '--socket-timeout', '5']
[debug] Batch file urls: ['https://www.youtube.com/watch?v=M576WGiDBdQ']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.9.5 (CPython) - Linux-5.14.2-051402-generic-x86_64-with-glibc2.33
[debug] exe versions: ffmpeg 4.3.2-0, ffprobe 4.3.2-0, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] M576WGiDBdQ: Downloading webpage
WARNING: Requested formats are incompatible for merge and will be merged into mkv.
[debug] Invoking downloader on 'https://r3---sn-xpgjvh-q0cd.googlevideo.com/videoplayback?expire=1631388257&ei=Aa48YY6jGM3N0wXq96TICQ&ip=212.129.73.154&id=o-AFuzzycGCjhFnTckAwhY94b-2x6ynjOvT538f-_K5iwP&itag=299&aitags=133%2C134%2C135%2C136%2C160%2C242%2C243%2C244%2C247%2C278%2C298%2C299%2C302%2C303&source=youtube&requiressl=yes&mh=_P&mm=31%2C29&mn=sn-xpgjvh-q0cd%2Csn-q0c7rn76&ms=au%2Crdu&mv=m&mvi=3&pl=21&initcwndbps=427500&vprv=1&mime=video%2Fmp4&ns=NumSxER5_Rmo8vsJm0QL9iQG&gir=yes&clen=4578203069&dur=58931.058&lmt=1631088374895899&mt=1631366234&fvip=3&keepalive=yes&fexp=24001373%2C24007246&beids=9466587&c=WEB&txp=6316222&n=pwmb1J-n0NrToZqN&sparams=expire%2Cei%2Cip%2Cid%2Caitags%2Csource%2Crequiressl%2Cvprv%2Cmime%2Cns%2Cgir%2Cclen%2Cdur%2Clmt&sig=AOq0QJ8wRAIgElonSXu7JRakC_C2F_CinRGvNna6U1kC2XVCgWQLsX8CIBq76qVmKtXTdbz8LZGwfV5QhBTBudp4mnvx7jKzzLTR&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AG3C_xAwRgIhAM28EVV2D8kL-PjpVXOx5KPx_KGI9vVlPnkCakZ5L_RtAiEArpyhwAP3_YrtRl8rSuZkxtwRgIhFw5jevMCwagUEEXI%3D'
[download] Destination: /home/aindriu/Físeáin/Íosluchtuithe/Solidity, Blockchain, and Smart Contract Course – Beginner to Expert Python Tutorial.f299.mp4
[download]   0.0% of 4.26GiB at 79.51KiB/s ETA 15:37:13^C
ERROR: Interrupted by user
DISCONNECTED
^C%                                                                                                                                                                                            ~/Íosluchtuithe  

The following is the config file of youtube-dl

# Always extract audio
# -x

# Do not copy the mtime
# --no-mtime

# Use this proxy
# --proxy 127.0.0.1:3128

# Save all videos under Movies directory in your home directory
 -o ~/Físeáin/Íosluchtuithe/%(title)s.%(ext)s

# Specifiying the quality of video
-f 'bestvideo[height<=1080]+bestaudio/best[height<=1080]'

Description

I am having an issue with youtube-dl downloading both .MP4 and .MKV formats of the same video. See the image below :

https://i.imgur.com/DrKPvaK.png

How can I force youtube-dl to either download either .MP4 OR .MKV? You can see with big files it’s really frustrating

Is there somehow I can specify to download either MP4 or MKV?

[aindriu80]

But some YouTube videos have better sound than video, would you not be lowering the quality?

I only specified the resolution to 1080p the rest is default bestvideo bestaudio/best :S

# Specifiying the quality of video
-f 'bestvideo[height<=1080]+bestaudio/best[height<=1080]'

[dirkf]

Do feel free to

PASTE VERBOSE LOG HERE

if you would like assistance.