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 "$f" -vf mpdecimate,setpts=N/FRAME_RATE/TB "%04d.png" || break; done
15}
16
17vidsubs() {
18	shopt -s nullglob
19	for f in *.{mkv,mp4}; do mkvmerge -o "${f%.*} SUB.mkv" "$f" --language 0:eng "${f%.*}.srt" || break; done
20}
21
22vidhash() {
23	# borrowed from my buddy neckspike:
24	# https://pastebin.com/mg3CVDiU
25	for f in *.mkv; do
26		hash=$(crc32 "$f" | tr '[:lower:]' '[:upper:]')
27		ext="${f##*.}"
28		newname="${f%.*} [$hash]".$ext
29
30		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: $newname"
31	done
32}
33
34choice() {
35	choose=$(gum choose "avi2mkv" "any2hevc" "vid2frames" "vidsubs" "vidhash")
36	case "$choose" in
37		*avi2mkv) avi2mkv ;;
38		*any2hevc) any2hevc ;;
39		*vid2frames) vid2frames ;;
40		*vidsubs) vidsubs ;;
41		*vidhash) vidhash ;;
42		*) exit;;
43	esac
44}
45
46choice