Getting INFO
Convert to webm
Repair index
from images to video
from video to images
MKV
x264
script
lates
on motion
telegram
preview day
camera motion

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 ) &

#!/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

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