twmp4

1 files changed, 43 insertions, 6 deletions

diff --git a/dot/local/bin/twmp4 b/dot/local/bin/twmp4
index 3cc3dad..755c67b 100755
--- a/dot/local/bin/twmp4
+++ b/dot/local/bin/twmp4
@@ -1,19 +1,57 @@
-#!/bin/sh
+#!/bin/bash
+
+usage()
+{
+    cat <<EOF
+Usage: $0 [options] <input>
+
+  Options:
+    --help|--usage|-h
+    --start <time>
+    --end <time>
+EOF
+}
+
+[ $# -gt 0 ] || set -- --help
+ARGS=$(getopt -o 'h' --long 'usage,help,start:,end:' -n 'twmp4' -- "$@") || exit
+eval set -- "$ARGS"
+unset ARGS
+
+INPUT_OPTIONS=
+while [ $# -gt 0 ]
+do
+    case "$1" in
+        -h|--help|--usage) usage; exit ;;
+        --start) INPUT_OPTIONS="$INPUT_OPTIONS -ss $2"; OUTPUT_SUFFIX="${OUTPUT_SUFFIX:+$OUTPUT_SUFFIX.}$2"; shift;;
+        --end) INPUT_OPTIONS="$INPUT_OPTIONS -to $2"; OUTPUT_SUFFIX="${OUTPUT_SUFFIX:+$OUTPUT_SUFFIX.}$2"; shift;;
+        --) shift; break ;;
+        -*) usage; exit 1 ;;
+        *) break;;
+    esac
+    shift
+done
+
 INPUT=$1
 set -ex
 
 [ -f "$INPUT" ]
+
+OUTPUT_SUFFIX=${OUTPUT_SUFFIX:+$OUTPUT_SUFFIX.}twitter.mp4
+
 case "$INPUT" in
-    *.mp4) OUTPUT=${INPUT%.mp4}.twitter.mp4 ;;
-    *.*) OUTPUT=${INPUT%.*}.twitter.mp4 ;;
-    *) OUTPUT=${INPUT}.twitter.mp4 ;;
+    *.mp4) OUTPUT=${INPUT%.mp4}.$OUTPUT_SUFFIX ;;
+    *.*) OUTPUT=${INPUT%.*}.$OUTPUT_SUFFIX ;;
+    *) OUTPUT=${INPUT}.$OUTPUT_SUFFIX ;;
 esac
 
+# source: https://gist.github.com/nikhan/26ddd9c4e99bbf209dd7
+
 if [ ! -e "$OUTPUT" ]
 then
-    # source: https://gist.github.com/nikhan/26ddd9c4e99bbf209dd7
     ffmpeg -hide_banner \
+           $INPUT_OPTIONS \
            -i "$INPUT" \
+           $OUTPUT_OPTIONS \
            -vcodec libx264 \
            -vf 'scale=640:trunc(ow/a/2)*2' \
            -acodec aac \
@@ -27,7 +65,6 @@ fi
 
 video_length()
 {
-    # source: https://superuser.com/questions/650291/how-to-get-video-duration-in-seconds/945604#945604
     ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "$1"
 }