Cannot find ffmpeg or avconv

[PacoBell]

The app can't seem to find an installation of ffmpeg or avconv and fails. It also can't seem to write to my phone's /sdcard directory, which definitely exists.

[odrevet]

YouTube-DL try to find a ffmpeg binary as it detects several formats for the video and will need to merge them at post processing.
I dont know how android handle it's path to call a binary like a linux or windows system, or if it is even possible (maybe with termux ? )

The video can still be download by enable the ignore error in the settings menu.

There are a lot of YouTube-DL options for preferred format that the app do not yet handle, having a setting to download a single format without post processing will probably be the best option.

The sdcard error is just a side effect of the previous error as nothing was downloaded.

[odrevet]

I installed ffmpeg via termux but the error remains, the app cannot found ffmpeg.
I do not close the issu in case someone has a solution.

As an alternative solution, the format can now be selected before the download. If the selected format do not require post processing, like DASH encoded video then we can still download videos.

[odrevet]

The latest version of termux allow to run command from another apps with proper authorizations :
termux/termux-app#804 (comment)

[odrevet]

need to patch youtube-dl systemcal to ffmpeg with

from jnius import cast
from jnius import autoclass

PythonActivity = autoclass('org.kivy.android.PythonActivity')
Intent = autoclass('android.content.Intent')
intent = Intent()
intent.setClassName("com.termux", "com.termux.app.RunCommandService");
intent.setAction("com.termux.RUN_COMMAND")
intent.putExtra("com.termux.RUN_COMMAND_PATH", "/data/data/com.termux/files/usr/bin/ffmpeg")
currentActivity = cast('android.app.Activity', PythonActivity.mActivity)
currentActivity.startService(intent)