Python can be built for android using the termux python package.
Prerequisites : git, docker
git clone git@github.com:termux/termux-packages.git
cd termux-packages
create a file build-python.sh with below content
#!/bin/bash
# use i686 for x86
export TERMUX_ARCH=arm
export TERMUX_PREFIX=/data/youtubedl-android/usr
export TERMUX_ANDROID_HOME=/data/youtubedl-android/home
./build-package.sh python
Make file executable
chmod +x ./build-python.sh
Build Package
./scripts/run-docker.sh ./clean.sh
./scripts/run-docker.sh ./build-python.sh
This will create several .deb files in debs/ directory.
I have found the following packages to be sufficient for youtube-dl to work.
python_3.7.2-1_arm.deb
libandroid-support_24_arm.deb
libutil_0.4_arm.deb
libffi_3.2.1-2_arm.deb
openssl_1.1.1a_arm.deb
ca-certificates_20180124_all.deb
The python zip archive as used in youtubedl-android can be created using the following commands.
cd debs
dpkg-deb -xv python_3.7.2-1_arm.deb .
dpkg-deb -xv libandroid-support_24_arm.deb .
dpkg-deb -xv libutil_0.4_arm.deb .
dpkg-deb -xv libffi_3.2.1-2_arm.deb .
dpkg-deb -xv openssl_1.1.1a_arm.deb .
dpkg-deb -xv ca-certificates_20180124_all.deb .
cd data/youtubedl-android
zip --symlinks -r /tmp/python3_7_arm.zip usr/lib usr/etc
https://github.com/yt-dlp/yt-dlp#dependencies
To build or add mutagen for embedding thumbnail go to mutagen then download the latest version
Unzip mutagen-1.45.1.tar.gz then you will find many files and folders, Delete all files and folders except the mutagen folder
Rename libpython.zip.so to libpython.zip then open it and add mutagen folder to the following path /usr/lib/python3.8/site-packages/ when finished rename libpython.zip to libpython.zip.so