validate_regex('format sorting', f, InfoExtractor.FormatSort.regex)
# Postprocessor formats
- validate_in('audio format', opts.audioformat, ['best'] + list(FFmpegExtractAudioPP.SUPPORTED_EXTS))
+ validate_regex('audio format', opts.audioformat, FFmpegExtractAudioPP.FORMAT_RE)
validate_in('subtitle format', opts.convertsubtitles, FFmpegSubtitlesConvertorPP.SUPPORTED_EXTS)
validate_regex('thumbnail format', opts.convertthumbnails, FFmpegThumbnailsConvertorPP.FORMAT_RE)
validate_regex('recode video format', opts.recodevideo, FFmpegVideoConvertorPP.FORMAT_RE)