There are several thin clients on which vlc is played by playing videos from a folder, sometimes users add a new video there, or delete an old one (another script is responsible for delivering the video and it works). It is necessary for VLC to add or remove videos from a playlist, preferably without delay. How it works now in cron the task that runs this script runs:

export DISPLAY=:0; cvlc -f --loop /home/user/Video;

Then every hour cron runs this script.

 export DISPLAY=:0; sleep 10; vlcproc=$(pidof vlc); a=$vlcproc; kill $a; cvlc -f --loop /home/user/Video

This option does not always work. Are there ways to get Vlc to periodically look in the folder in search of a new video?

  • one
    superuser.com/q/644784/454489 - aleksandr barakin
  • This is the way I found, it is not quite working. - Evgeniy A
  • The “way” is elementary: 1. Play a playlist. 2. complete the work. 3. return to point one. // "working" way simply can not exist. // finite, you can granulate the first and second paragraph even smaller: 1. play the file. 2. complete the work. - aleksandr barakin
  • I would mention the keywords: MPRISv2 & inotify. No crowns, everything will work out clearly. - 0andriy

2 answers 2

Are there ways to get Vlc to periodically look in the folder in search of a new video?

probably there is only “not his business”. algorithm:

  1. get a list
  2. if the next file exists, play it back
  3. otherwise go to step 2
  4. if the list is not empty go to step 2
  5. go to step 1
 while :; do for f in *; do # это пункт 1 [ -r "$f"] && воспроизвести "$f" # это пункт 2 done done

    In general, I decided to go the other way, play the video through the browser, and there was no need to reboot the vlc to reload the video.

     <!DOCTYPE html> <html lang="ru"> <head> <script src="https://code.jquery.com/jquery-1.11.0.min.js" integrity="sha256-spTpc4lvj4dOkKjrGokIrHkJgNA0xMS98Pw9N7ir9oI=" crossorigin="anonymous"></script> <meta charset="utf-8" /> </head> <body style="overflow: hidden; background-color: black;"> <iframe id="barCode" style="z-index: -1; position: absolute; border: none; left: 0; top: 0; width: 100%; height: 100%;"> </iframe> <img id="default" src="default.png" style="position: absolute; z-index: 5; top: 0; left:0;"/> <img id="playImage" src="" style="position: absolute; z-index: -1; top: 0; left:0;"/> <iframe id="url" style="z-index: -1; position: absolute; top: 0; left: 0; border: 0; width: 100%; height: 100%;"> </iframe> <video id="VideoPlayer" style="position: absolute; width: 100%; height: 100%; z-index: -1; top: 0; left: 0;" autoplay="autoplay" poster=""> <source src=""> </video> </body> <script> $(function() { var interval = 0; var video = $("#VideoPlayer"); var source = video.find("source"); var image = $("#playImage"); var def = $("#default"); var url = $("#url"); image.css("width", "100%"); image.css("height", "100%"); var timer = { name: 0, time: 0, run: function(timer) { if (timer.time >= 30) { timer.userOmission(timer); } else { timer.time += 1; timer.name = setTimeout(function() {timer.run(timer);}, 1000); } }, clear: function(timer) { timer.time = 0; }, stop: function(timer) { clearTimeout(timer.name); timer.clear(timer); }, userOmission: function(timer) { timer.stop(timer); $("#barCode").css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); } }; function getBarCode() { $.ajax({ url: "/slot?barcode", headers: { 'If-None-Match' : (!localStorage['Etag']) ? "" : localStorage['Etag'], 'If-Modified-Since' : (!localStorage['Last-Modified']) ? "" : localStorage['Last-Modified'] }, success: function(data, s, xhr) { clearInterval(interval); service_url = "http://{bar_code}/"; $("#barCode").attr("src", service_url.replace("{bar_code}", data)); $("#barCode").css({"zIndex" : "5", "visibility" : "visible", "display" : "block"}); def.css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); url.css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); image.css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); video.css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); completeGetBarCode(xhr); }, error: function(data) { setTimeout(function() {completeGetBarCode(data);}, 15000); }, timeout: 20000 }); function completeGetBarCode(xhr) { if ((xhr.getResponseHeader('Etag') != null) || (xhr.getResponseHeader('Last-Modified') != null)) { localStorage['Etag'] = xhr.getResponseHeader('Etag'); localStorage['Last-Modified'] = xhr.getResponseHeader('Last-Modified'); } getBarCode(); } } function downloadPlayList(playlist, item) { $.ajax({ type: "GET", url: "http://localhost/DS/html/media/playlist.json", <!--загружаем playlist в формате .json его нужно предварительно сгенерировать [[,["video1","1","duration-in-mil-sec"],["video2","1","30038"],["video3","1","77459"]],[]] --> success: function(data) { setTimeout(displayPlayListItem, 0, data, item); }, error: function() { setTimeout(displayPlayListItem, 0, playlist, item); } }); } function displayPlayListItem(playlist, item) { var time = 10000; var images = playlist[0]; if (images.length != 0) { if (item >= images.length) { item = 0; } if (images[item][1] == "1") { // video def.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); url.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); image.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); video.css({"zIndex": "5", "visibility": "visible", "display": "block"}); source.attr("src", "http://localhost/DS/html/files/" + images[item][0]); <!-- файлы в кодировке h264 --> video[0].load(); video[0].play(); } else if (images[item][1] == "0") { // image def.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); url.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); image.css({"zIndex": "5", "visibility": "visible", "display": "block"}); video.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); source.attr("src", ""); image.attr("src", "http://localhost/DS/html/files/" + images[item][0]); } else if (images[item][1] == "2") { // url def.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); url.css({"zIndex": "5", "visibility": "visible", "display": "block"}); image.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); video.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); source.attr("src", ""); url.attr("src", images[item][0]); } else if (images[item][1] == "3") { // audio def.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); url.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); image.css({"zIndex": "-1", "visibility": "hidden", "display": "none"}); video.css({"zIndex": "5", "visibility": "visible", "display": "block"}); video.attr("poster", ""); source.attr("src", "http://localhost/DS/html/files/" + images[item][0]); video[0].load(); video[0].play(); } time = images[item][2]; ++item; } else { def.css({"zIndex" : "5", "visibility" : "visible", "display" : "block"}); image.css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); video.css({"zIndex" : "-1", "visibility" : "hidden", "display" : "none"}); } setTimeout(downloadPlayList, time, playlist, item); } downloadPlayList([[]], 0); getBarCode(); $("#barCode").live("click", function() { console.log(timer); timer.clear(timer); }); }); </script> </html>
    And bash script to convert and generate a playlist.json file

     #!/bin/bash LOCK_FILE=/home/gv/Video/lockfile.lock if [ -e $LOCK_FILE ] then PID=`cat $LOCK_FILE` PID_NAME=`ps -p $PID -o comm=` if [ ! -z $PID_NAME ] then echo $(date -u)"Скрипт $0 найден в списке прооцессов"; exit -1; else echo $(date -u)"Обнаружен lock-file с несуществующим ID процесса" rm $LOCK_FILE fi fi echo $$ > $LOCK_FILE sleep 5m ipofclient=10.10.10.10; sshpass=password folderhtml=/temp/folder/to/upload #temp foldervideoonthinclient=/folder/in/thinclient/with/file loginandhostname=login@$ipofclient #данные для ssh dir=/folder/to/upload/new/video; a=/folder/in/thinclient/with/file; Normaltimetmp=/folder/withtemp/file jsonfile=/pathto/playlist.json filewhithlistofvideo=/files/withlist/of/video sshpass -p ds ssh -o StrictHostKeyChecking=no login@$ipofclient "rm -R $foldervideoonthinclient/*" mkdir $a; chmod 0777 $a; cp -rp $dir/* $a/; sleep 10 find $a -type f | while read full do name=${full##*/} mv -- "${full}" "${full%/*}/${name// /_}" done; cd $a; for video in `find . -type f`; do mv "$video" $(echo "$video" | sha1sum | cut -f1 -d' '); done; find $a -type f | while read video; do name=${video##*/} #Простой рабочий вариант ffmpeg -i "$video" -vcodec libx264 $video.mp4 < /dev/null; ffmpeg -i "$video" -c:v libx264 -crf 23 -preset ultrafast -movflags +faststart -vf scale=-2:720 $video.mp4 < /dev/null; #-crf 20.0 -vcodec libx264 -vf scale=w=1280:h=720 -preset slow -acodec aac -strict experimental -ar 48000 -b:a 128k -coder 1 -flags +loop -cmp chroma -partitions +parti4x4+partp8x8+partb8x8 -me_method hex -subq #6 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -b_strategy 1 -threads 0 #rm -r ${video} done; cd $a; #find -name "*[^\.]*" --delete; for i in *; do mv $i $(echo $i | sed 's/\.[a-zA-Z1-9]*$//'); done; videotmp=`ls $a >> $filewhithlistofvideo` #Записываем список преобразованных файлов в файл declare -a array1 array1=(`cat $filewhithlistofvideo | tr '\n' ' '`) #Записываем в массив все строчки из файла с видео declare -a array2 array2=(`for f in $a/*; do ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 $f done`) # записываем в массив данные о продолжительности видео shtuka=1000 p="${array2[0]} $shtuka * p" |dc | sed 's/.\{7\}$//' for math in ${array2[0]} ${array2[1]} ${array2[2]} ${array2[3]} ${array2[4]} ${array2[5]} ${array2[6]} ${array2[7]} ${array2[8]} ${array2[9]} ${array2[10]} ${array2[11]} ${array2[12]} ${array2[13]} ${array2[14]} ${array2[15]} ${array2[16]} ${array2[17]} ${array2[18]} ${array2[19]} ${array2[20]} ${array2[21]} ${array2[22]} ${array2[23]} ${array2[24]} ${array2[25]} ${array2[26]} ${array2[27]} ${array2[28]} ${array2[29]} ${array2[30]} ${array2[31]} do echo "$math $shtuka * p" |dc | sed 's/.\{7\}$//' >> $Normaltimetmp done array3=(`cat $Normaltimetmp | tr '\n' ' '`) echo '[''[''[''"'${array1[0]}'"'',''"1"'',''"'${array3[0]}'"'']'',''[''"'${array1[1]}'"'',''"1"'',''"'${array3[1]}'"'']'',''[''"'${array1[2]}'"'',''"1"'',''"'${array3[2]}'"'']'',''[''"'${array1[3]}'"'',''"1"'',''"'${array3[3]}'"'']'',''[''"'${array1[4]}'"'',''"1"'',''"'${array3[4]}'"'']'',''[''"'${array1[5]}'"'',''"1"'',''"'${array3[5]}'"'']'',''[''"'${array1[6]}'"'',''"1"'',''"'${array3[6]}'"'']'',''[''"'${array1[7]}'"'',''"1"'',''"'${array3[7]}'"'']'',''[''"'${array1[8]}'"'',''"1"'',''"'${array3[8]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[10]}'"'',''"1"'',''"'${array3[10]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[11]}'"'']'',''[''"'${array1[11]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[12]}'"'',''"1"'',''"'${array3[12]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[13]}'"'']'',''[''"'${array1[13]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[14]}'"'',''"1"'',''"'${array3[14]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[15]}'"'']'',''[''"'${array1[15]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[16]}'"'',''"1"'',''"'${array3[16]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[17]}'"'']'',''[''"'${array1[17]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[18]}'"'',''"1"'',''"'${array3[18]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[19]}'"'']'',''[''"'${array1[19]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[20]}'"'',''"1"'',''"'${array3[20]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[21]}'"'']'',''[''"'${array1[21]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[22]}'"'',''"1"'',''"'${array3[22]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[23]}'"'']'',''[''"'${array1[23]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[24]}'"'',''"1"'',''"'${array3[24]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[25]}'"'']'',''[''"'${array1[25]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[26]}'"'',''"1"'',''"'${array3[26]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[27]}'"'']'',''[''"'${array1[27]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[28]}'"'',''"1"'',''"'${array3[28]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[29]}'"'']'',''[''"'${array1[29]}'"'',''"1"'',''"'${array3[9]}'"'']'',''[''"'${array1[30]}'"'',''"1"'',''"'${array3[30]}'"'']'',''[''"'${array1[9]}'"'',''"1"'',''"'${array3[31]}'"'']'',''[''"'${array1[31]}'"'',''"1"'',''"'${array3[9]}'"'']'',''],''['']'']' > $jsonfile #Не забудь удалить файлы иначе задваиваются значения в JSON rm #Передаем файлы sed -r 's/\["","1",""\],? *//g; s/,\]/]/g' -i $jsonfile sshpass -p $sshpass scp -r $folderhtml $loginandhostname:$foldervideoonthinclient #sshpass -p $sshpass ssh -o StrictHostKeyChecking=no $loginandhostname reboot// Не работает ребует рута на вертуалке #Удаляем всякий темп rm -f $filewhithlistofvideo rm -f $Normaltimetmp rm -f $jsonfile rm -f $a/* rm $LOCK_FILE exit 0