sudo ufw allow 9023
sudo apt install apt-transport-https
sudo -i
echo "deb [signed-by=/usr/share/keyrings/tor-archive-keyring.gpg] https://deb.torproject.org/torproject.org bullseye main" >> /etc/apt/sources.list
echo "deb-src [signed-by=/usr/share/keyrings/tor-archive-keyring.gpg] https://deb.torproject.org/torproject.org bullseye main" >> /etc/apt/sources.list
wget -qO- https://deb.torproject.org/torproject.org/A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89.asc | gpg --dearmor | tee /usr/share/keyrings/tor-archive-keyring.gpg >/dev/null
sudo apt update
sudo apt install tor deb.torproject.org-keyring
sudo apt install obfs4proxy
sudo setcap cap_net_bind_service=+ep /usr/bin/obfs4proxy
sudo sed -i 's/NoNewPrivileges=yes/NoNewPrivileges=no/' /lib/systemd/system/tor@default.service
sudo systemctl daemon-reload
sudo tee -a /etc/tor/torrc > /dev/null <<EOT
Log notice file /var/log/tor/log
ORPort 9023
AssumeReachable 1
ExtORPort auto
BridgeRelay 1
PublishServerDescriptor 0
ExitPolicy reject *:*
ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy
ServerTransportListenAddr obfs4 0.0.0.0:443
ContactInfo nope@nope.com
Nickname lain
EOT
sudo systemctl restart tor

sudo cat /var/lib/tor/fingerprint

➜  ~ cht.sh webm to mp4
/*
 * As your input file report a strange frame rate value `1k fps` coming
 * from the tbs and tbr value (look [here for their definition][1])
 *
 * the encoder generate a different result, `16k tbn, 1k tbc (default)`
 *
 * So by calling :
 */

 ffmpeg -fflags +genpts -i 1.webm -r 24 1.mp4

/*
 * You configure ffmpeg to generate new pts (a.k.a Presentation
 * TimeStamp) for each frame and you set the target frame-rate to 24.
 *
 * So your output mp4 file info (`ffmpeg -i ....`) change from
 */

 Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 4327 kb/s, 1000.09 fps, 1k tbr, 16k tbn, 2k tbc

/* to */

 Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1670 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc

/*
 *   [1]: https://stackoverflow.com/questions/3199489/meaning-of-ffmpeg-
 * output-tbc-tbn-tbr
 *
 * [alexbuisson] [so/q/18123376] [cc by-sa 3.0]
 */
➜  ~