blob: 755c67b38d4a368a19068648e34008fbfc682aa3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
#!/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}.$OUTPUT_SUFFIX ;;
*.*) OUTPUT=${INPUT%.*}.$OUTPUT_SUFFIX ;;
*) OUTPUT=${INPUT}.$OUTPUT_SUFFIX ;;
esac
# source: https://gist.github.com/nikhan/26ddd9c4e99bbf209dd7
if [ ! -e "$OUTPUT" ]
then
ffmpeg -hide_banner \
$INPUT_OPTIONS \
-i "$INPUT" \
$OUTPUT_OPTIONS \
-vcodec libx264 \
-vf 'scale=640:trunc(ow/a/2)*2' \
-acodec aac \
-vb 1024k \
-minrate 1024k -maxrate 1024k \
-bufsize 1024k -ar 44100 \
-strict experimental \
-r 30 \
"$OUTPUT"
fi
video_length()
{
ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "$1"
}
chunk_seconds=135 # twitter max is 140, but ffmpeg can run over specified time
video_length=$(video_length "$OUTPUT")
if [ "${video_length%.*}" -gt "$chunk_seconds" ]
then
# source: https://unix.stackexchange.com/questions/1670/how-can-i-use-ffmpeg-to-split-mpeg-video-into-10-minute-chunks/212518#212518
CHUNKS=${OUTPUT%.mp4}.%03d.mp4
ffmpeg -hide_banner \
-i "$OUTPUT" \
-c copy \
-map 0 \
-segment_time "$chunk_seconds" -f segment -reset_timestamps 1 "$CHUNKS"
fi
|
