WinFF (FFMPEG): Unknown encoder 'libvo_aacenc'

I confirm with vinay, but you must modify a command line to this:

sudo apt-get install libavcodec-extra

P.S. Edited command.

libvo_aacenc was low quality and FFmpeg removed support for this encoder.

Use -c:a aac or -c:a libfdk_aac instead.

See FFmpeg Wiki: AAC for more info.

sudo apt-get install libavcodec-extra-54

Based on this instant of this video

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