How to pass in filename arguments from youtube-dl to exec?

[MichaelMallett]

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Description of your issue, suggested solution and other information

I'm struggling to figure out the format for -exec when running ffmpeg, I'm attempting to cut an audio file from youtube into a 30 second clip. However, I can't figure out a way to use {}, or youtube-dl output formats in the exec command.

If I try to use {} as the output name like so
youtube-dl -x https://soundcloud.com/rinsefm/sasasas110618 --exec "ffmpeg -ss 00:01:00.00 -i {} -ss 00:00:00.00 -t 00:00:30.00 {}"

I get a
Error while decoding stream #0:0: Invalid data found when processing input, presumably because it's overwriting the file while reading.

If I try and use the youtube-dl format for naming I get a syntax error as this is not valid for ffmpeg

youtube-dl -x https://soundcloud.com/rinsefm/sasasas110618 --exec 'ffmpeg -ss 00:01:00.00 -i {} -ss 00:00:00.00 -t 00:00:30.00 %(uploader)s%(title)s.%(ext)s'

I've been searching for hours in the find -exec documentation an across forums and I can't find a way to alter the name of the output file dynamically from the input file in exec. Ideally I'd like to use the original filename but append _clip to the name. Any pointers?

[dstftw]

Input and output names should be different as you already mentioned. Also --exec does not support output template.