1#!/usr/bin/env bash
 2
 3avi2mkv() {
 4	for f in *.avi; do ffmpeg -fflags +genpts -i "$f" -c:v copy -c:a copy -c:s copy "${f%.*} AVI2MKV.mkv" || break; done
 5}
 6
 7any2hevc() {
 8	shopt -s nullglob
 9	for f in *.{mkv,mp4,ts}; do ffmpeg -hwaccel cuda -hwaccel_output_format cuda -i "$f" -c:v hevc_nvenc -qmin 24 -qmax 24 -vtag hvc1 -profile main -preset slow -rc vbr_hq -c:a copy -c:s copy -map 0 "${f%.*} HEVC.mkv" || break; done
10}
11
12vid2frames() {
13	shopt -s nullglob
14	for f in *.{mkv,mp4,webm}; do ffmpeg -i "$f" -vf mpdecimate,setpts=N/FRAME_RATE/TB "%04d.png" || break; done
15}
16
17vidsubs() {
18	shopt -s nullglob
19	for sub in *.{srt,ass}; do
20		subext="${sub##*.}"
21	done
22
23	for f in *.{mkv,mp4}; do mkvmerge -o "${f%.*} SUB.mkv" "$f" --language 0:eng "${f%.*}.$subext" || break; done
24}
25
26vidhash() {
27	# borrowed from my buddy neckspike:
28	# https://pastebin.com/mg3CVDiU
29	for f in *.mkv; do
30		hash=$(crc32 "$f" | tr '[:lower:]' '[:upper:]')
31		ext="${f##*.}"
32		newname="${f%.*} [$hash]".$ext
33
34		gum confirm "are you sure you want to rename?" --default=yes --timeout=2s && mv "$f" "$newname" && echo -e "new name: $newname" || echo -e "no files renamed: $newname"
35	done
36}
37
38choice() {
39	choose=$(gum choose "avi2mkv" "any2hevc" "vid2frames" "vidsubs" "vidhash")
40	case "$choose" in
41		*avi2mkv) avi2mkv ;;
42		*any2hevc) any2hevc ;;
43		*vid2frames) vid2frames ;;
44		*vidsubs) vidsubs ;;
45		*vidhash) vidhash ;;
46		*) exit;;
47	esac
48}
49
50choice