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