Invalid data found when processing input

[lrrsh]

Describe the bug
When downloading any anime with allanime the error Invalid data found when processing input shows and stops downloading.

To Reproduce
Steps to reproduce the behavior:

1. anipy-cli -D --ffmpeg
2. Select any anime
3. Download sub/dub
4. See error

Expected behavior
Should download anime.

Info
Post your output of pip show anipy-cli

venvs are in /home/lrr/.local/share/pipx/venvs
apps are exposed on your $PATH at /home/lrr/.local/bin
manual pages are exposed at /home/lrr/.local/share/man
   package anipy-cli 3.8.0, installed using Python 3.13.7
    - anipy-cli

Platform

• OS: Arch Linux x86_64
• Python 3.13.7

Additional context

***Download Mode***
Downloads are stored in: /mnt/data/media/anime
? Do you want to search in season? No
Hint: you can set `skip_season_search` to `true` in the config to skip this prompt!
? Search Anime: lain
? Select Show: 1. AL: Serial Experiments Lain (S/D)
? Want to watch in dub? No
Hint: you can set a default in the config with `preferred_type`!
? Input Episode Range(s) from episodes 1 to 13: 1
> Downloading Episode 1 of Serial Experiments Lain (sub)
> Downloading external subs
> Using FFMPEG downloader
> Saving to a .mp4 container
! An error occurred during download: https://fogtwist21.xyz/_v7/19b0b2b774d44eadec994ca735826eb3d4d89d4c92a6f2c12c956d9b4bc279dae924964b96e129adceb62704f1e0a416c953ee675c15819c83c95261e7b0b68e24f9380002526d869a3a923bca20617203761fefd96e51feec618ef8636f969301d93238d098e26004c5854e64bbdb045356381554566957e5a7e46de3741d3a/index-f1-v1-a1.m3u8: Invalid data found when processing input
! 2 retries remain
> Downloading external subs
> Using FFMPEG downloader
> Saving to a .mp4 container
! An error occurred during download: https://fogtwist21.xyz/_v7/19b0b2b774d44eadec994ca735826eb3d4d89d4c92a6f2c12c956d9b4bc279dae924964b96e129adceb62704f1e0a416c953ee675c15819c83c95261e7b0b68e24f9380002526d869a3a923bca20617203761fefd96e51feec618ef8636f969301d93238d098e26004c5854e64bbdb045356381554566957e5a7e46de3741d3a/index-f1-v1-a1.m3u8: Invalid data found when processing input
! 1 retries remain
> Downloading external subs
> Using FFMPEG downloader
> Saving to a .mp4 container
! An error occurred during download: https://fogtwist21.xyz/_v7/19b0b2b774d44eadec994ca735826eb3d4d89d4c92a6f2c12c956d9b4bc279dae924964b96e129adceb62704f1e0a416c953ee675c15819c83c95261e7b0b68e24f9380002526d869a3a923bca20617203761fefd96e51feec618ef8636f969301d93238d098e26004c5854e64bbdb045356381554566957e5a7e46de3741d3a/index-f1-v1-a1.m3u8: Invalid data found when processing input
! 0 retries remain
! Error: https://fogtwist21.xyz/_v7/19b0b2b774d44eadec994ca735826eb3d4d89d4c92a6f2c12c956d9b4bc279dae924964b96e129adceb62704f1e0a416c953ee675c15819c83c95261e7b0b68e24f9380002526d869a3a923bca20617203761fefd96e51feec618ef8636f969301d93238d098e26004c5854e64bbdb045356381554566957e5a7e46de3741d3a/index-f1-v1-a1.m3u8: Invalid data found when processing input
! Issues downloading episode 1 of Serial Experiments Lain. Skipping...
! Unable to download the following episodes: 
	Episode 1 of Serial Experiments Lain

[sdaqo]

Did you try w/o --ffmpeg?

[lrrsh]

It works without ffmpeg, however the person I am doing this for wants it with ffmpeg (to them it is easier to run a command and be done)

[sdaqo]

Ok will look into it