These are aliases that are no longer documented for various reasons
--avconv-location --ffmpeg-location
+ --clean-infojson --clean-info-json
--cn-verification-proxy URL --geo-verification-proxy URL
--dump-headers --print-traffic
--dump-intermediate-pages --dump-pages
--force-write-download-archive --force-write-archive
--load-info --load-info-json
+ --no-clean-infojson --no-clean-info-json
--no-split-tracks --no-split-chapters
--no-write-srt --no-write-subs
--prefer-unsecure --prefer-insecure