Video TIPS

Getting INFO

avprobe <file>

Convert to webm

ffmpeg -i input.video -threads 4 -b:v 1M -crf 10 output.webm

Repair index

mencoder -idx input.video -ovc copy -oac copy -o output.video

from images to video

# 5 images per seconds
ffmpeg -y -framerate 5 -pattern_type glob -i '*.jpg' -c:v libx264 -vf "fps=25,scale=720:trunc(ow/a/2)*2" out.mp4

ffmpeg -r 30 -s 1080x1080 -i imgs/%05d.jpg -vcodec libx264 -crf 15 -pix_fmt yuv420p out.mkv

crf: quality, minor is better

from video to images

ffmpeg -i input.mp4 -qscale:v 2 imgs/%05d.jpg

qscale:v is quality, 2-15 minor is better

MKV

convert to mkv

mkvmerge -o output.mkv <inputfile>

convert to mkv and downgrade quality

avconv -i <inputfile> -map 0 -c:v libx264 -crf 20 -c:a copy -c:s copy <outfile>.mkv

concatenate all *.mp4 files to output.mkv

mkvmerge -o output.mkv $(echo *.mp4 | sed "s| | +|g")

x264

From x265 to x264

ffmpeg -xerror -i input.mkv -hide_banner -threads 0 -map 0 -c:a copy -c:s copy -c:v libx264 -pix_fmt yuv420p output.mkv

script

convert files to mkv and downgrade them if greater than specific value

tomkv (chmod +x)

#!/bin/bash
OUTDIR=out
LIMIT_MBYTE=1500
QUALITY=20 # lower values are better
mkdir -p $OUTDIR
set -x
for f in "$@"
do
[ -f "$f" ] || continue
SIZE=$(stat -c%s "$f")
OUTNAME=$OUTDIR/${f%.*}.mkv
[ -f "$OUTNAME" ] && ( echo "Skip $OUTNAME"; continue )
if [ $SIZE -gt $(($LIMIT_MBYTE*1000000)) ]; then
echo avconv $f
avconv -i "$f" -map 0 -c:v libx264 -crf $QUALITY -c:a copy -c:s copy "$OUTNAME"
else
echo mkvmerge $f
mkvmerge "$f" -o "$OUTNAME"
fi
done

Usage to convert into ./out folder

tomkv file1 file2 ...

lates

#!/bin/bash CHATID=$1 BASEpath='/media/camere' [ -z "${CHATID}" ] && exit 1 for folder in $(find /media/camere/ -maxdepth 1 -name "camera*" -type d); do for video in $(find $folder -newer $folder.jpg -name "*mp4"); do i=$(echo "$folder" | tail -c 2) preview=$BASEpath/preview$i.mp4 ago_seconds=$(( $(date +%s) - $(stat -c %Y $video ) )) if [ $ago_seconds -le 3600 ]; then ago="$(( $ago_seconds / 60 )) minutes" else ago="$(( $ago_seconds / 3600 )) hours" fi echo "video $video is $ago" ( ffmpeg -i $video -r 0.5 -c:v libx264 -an -t 30 -y $preview </dev/null >/dev/null 2>/tmp/preview$i.log ; \ ~/telegram.sh "$ago (camera $i)" "${preview}" $CHATID ) & sleep 1 done done

on motion

#!/bin/bash
CHROOT=/media/camere/
FILENAME=$1
# name of the first folder level inside CHROOT
INPUT=$(cut -d'/' -f1 <<<"${FILENAME/$CHROOT/}")
# lowercase
INPUT=${INPUT,,}
LOCK=${CHROOT}${INPUT}.lock
[ -f $FILENAME ] && ln -sf $FILENAME ${CHROOT}${INPUT}.jpg
[ -f $LOCK ] && exit 0
touch $LOCK
name="`date +%Y-%m-%d_%H.%M`"
i=${INPUT/camera/}
video=$CHROOT/camera$i/$name.mp4
echo "acquire from camera $i"
( ffmpeg -i rtsp://admin:test@192.168.0.9$i/12 -timeout 10 -stimeout 5000000 -c:v copy -an -t 300 -y $video </dev/null >/dev/null 2>/tmp/camera$i.log ; rm -f $LOCK ) &

telegram

#!/bin/sh
set -x
caption=$1
video=$2
CHATID=$3
#
TOKEN="xxxx:xxxx"
[ -z "$CHATID" ] && exit 1
curl -F chat_id="$CHATID" \
-F document=@"${video}" \
-F caption="$caption" https://api.telegram.org/bot${TOKEN}/sendDocument

preview day

#!/bin/bash
set -x
CHATID=$1
CHATID=${CHATID:=xxxxxx}
i=$2
i=${i:=1}
SPEED=${3}
SPEED=${SPEED:=50}
INVSPEED=$(echo "1/$SPEED" | bc -l)
[ -z "$CHATID" ] && exit 1
BASE=/media/camere
DAY=$(date +"%Y-%m-%d")
video=$BASE/day-$i-$DAY.mp4
echo "create $video"
# 0.02: 20 volte la velocita
if [ ! -f $video ]; then
ffmpeg -f concat -safe 0 \
-i <(find "$BASE/camera$i" -mmin -1440 -name "*mp4" -printf "%AT file '%p'\n" | sort -k1.1n | cut -c 21- ) \
-c:v libx264 -filter:v "setpts=$INVSPEED*PTS" -an -y $video
# -r 0.1 -c:v libx264 -an -y $video
fi
~/telegram.sh "Camera $i" "${video}" $CHATID

camera motion

INPUT=rtsp://foscam:foscam1@192.168.2.14/videoMain
ffprobe -i $INPUT

ffmpeg -rtsp_transport tcp -i $INPUT -c:v libx264 -an -y test.mp4

shinobi

ffmpeg -loglevel warning -analyzeduration 5000000 -probesize 5000000 \
-rtsp_transport tcp -i rtsp://admin:admin@192.168.2.29:554/12 \
-preset ultrafast -crf 15 -an -c:v libx264 -r 2 -f hls -s 640x380 \
-max_muxing_queue_size 1024 \
-tune zerolatency -g 1 -hls_time 2 -hls_list_size 3 -start_number 0 -hls_allow_cache 0 \
-hls_flags +delete_segments+omit_endlist "/dev/shm/streams/8Pkk5cE2xY/LIBm503cxy/s.m3u8" \
-f singlejpeg -vf fps=0.5 -s 640x380 pipe:0 \
-update 1 -r 1 "/dev/shm/streams/8Pkk5cE2xY/LIBm503cxy/s.jpg" \
-y -f mpegts -c:v libx264 http://127.0.0.1:8080/streamIn/8Pkk5cE2xY/LIBm503cxy/1