getting cap_ffmpeg_impl error

[byteless]

I spent hours to figure this out and not able to.
Can someone please tell me whats wrong?
I am getting the following error.

[ERROR:0@39.886] global cap_ffmpeg_impl.hpp:1268 open Could not find decoder for codec_id=61
[ERROR:0@39.886] global cap_ffmpeg_impl.hpp:1317 open VIDEOIO/FFMPEG: Failed to initialize VideoCapture

ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20200122

I am using win10 using Python 3.8.18

[byteless]

I have installed K-Lite_Codec_Pack_1826_Mega
and all other possible CODEC packs

[byteless]

so this error was coming due to feeding PNG file.
When I convert the PNG to jpg then I able to produce the video, but it still throw the following error at the end.
The generated video is not high quality.

OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 12 and format 'mp4 / MP4 (MPEG-4 Part 14)'
OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'

here is the command I am using.

python inference.py --driven_audio ..//batch/audio.mp4 --source_image ../andrew.PNG --result_dir ../results --still --preprocess full --enhancer gfpgan --expression_scale 1.2