Robert James Metcalfe Blog

Ffmpeg User Defined Video Editing Crontab Assisted Sharing Tutorial

In yesterday’s Ffmpeg User Defined Video Editing Sharing Tutorial about sharing video data (that might have been edited by ffmpeg command line means) we warned …

even though it is only likely to work for shorter videos

… regarding the data URI hashtagged parts to SMS or email links that we were exclusively using … then. But, with this in mind, what do …

1. data URI based URLs (hashtagged in an email or SMS link) … and …
2. absolute URL that points to a web server soft link file, itself pointing to /tmp/ video data files ((we’re still hashtagging, but now, don’t really have to, apply) in an email or SMS link)

… share? We’d say, as far as sharing goes …

A sense of permanency.

But …

• the second one does not “push the barrow” as much as the first regarding the amount of data … whereas …
• the first is totally ephemeral and not asking anything more of the web server (ie. the RJM Programming associated one) regarding ongoing storage but is asking a lot of web browsers and client mail applications in the case of video data of any bulk

In terms of sharing videos of any bulk, we’re now, with our web application …

• renaming the top button (that used to be “Display”) as “Display for a Day” and applying absolute URL (that point at web server soft links that, in turn, point at what can be sizeable video data files that might hang around in RJM Programming domain associated web server /tmp/ location) logics which call on “crontab” … (
  
*/53 * * * * /etc/init.d/every_hour.sh

  … now mentions …
  
ksh -c 'for i in `find /tmp -name "my_video_*.*" -mmin -1440`; do rm -f $i; done'

  ) … assistance to do with the tidy up we feel we need to do on the web server so that large files do not hang around forever (and as you might surmise, at most a day, regarding the bulk of data requirements that are temporarily stored in /tmp/ locations with user associated IP addresses part of the file naming paradigm) … whereas …
• the bottom button remains as “Display” and still uses data URI based logic

… so that these bulky videos can be successfully shared (via clicks of that “Display for a Day” button) as long as the email or SMS link is attended to by the collaboration recipient within those 24 hours, further to yesterday’s Ffmpeg User Defined Video Editing Sharing Tutorial.

As well, today, as a genericization measure, we stop seeing govetts_leap in any video file naming, replaced by my_video now that the input video control has become less rigid, and now can be controlled, to some extent, by the user in our changed fourth draft of Your Own Ffmpeg Video Changes, which can be that much more useful in a new way in the AlmaLinux web server environment.

Previous relevant Ffmpeg User Defined Video Editing Sharing Tutorial is shown below.

Ffmpeg User Defined Video Editing Sharing Tutorial

Sharing options for video based data are often more restrictive regarding email and SMS conduits, but we’ll still go ahead with a …

• “a” link “mailto:” (for emails) or “sms:” (for SMS) methodology …
• email subject containing ffmpeg command used for an output video mode of sharing … or …
• input video mode of sharing before any ffmpeg involvement … based on …
• email or SMS links where the video data URI (as necessary) is hashtagged

… set of ideas to try out, even though it is only likely to work for shorter videos. The other more obvious sharing mechanism is to download video data via right click options the web browser product you are using offers anyway. And another sharing idea, independent, and working for input videos is to browse for a video using the helper web application from yesterday, and use its Share API based button below the browsing button to share that input video using one of …

• Mail
• Messages
• AirDrop
• Notes
• Simulator
• Freeform

… on our macOS Safari web browser here on a MacBook Air.

Further to yesterday’s Ffmpeg User Defined Browsed Video Editing Tutorial, then, we have some new (PHP writes) Javascript functions …

<?php echo ”

function smsit() {
var smsno=prompt('Please enter SMS number.', '');
if (smsno != null) {
if (document.getElementById('cto').title.indexOf('data:') == 0) {
document.getElementById('asms').href='sms:' + smsno + '&body=' + encodeURIComponent(document.URL.split('?')[0].split('#')[0] + '#vcont=' + document.getElementById('cto').title);
} else {
document.getElementById('asms').href='sms:' + smsno + '&body=' + encodeURIComponent(document.URL.split('?')[0].split('#')[0] + '#vcont=' + document.getElementById('resultav').value);
}
document.getElementById('asms').click();
}
}


function emailit() {
var emailaddr=prompt('Please enter Email address.', '');
if (emailaddr != null) {
if (document.getElementById('cto').title.indexOf('data:') == 0) {
document.getElementById('aemail').href='mailto:' + emailaddr + '?subject=Ffmpeg%20Video' + encodeURIComponent(' ... ' + document.getElementById('mysubtwo').value.replace(/^Display$/g,'')) + '&body=' + encodeURIComponent(document.URL.split('?')[0].split('#')[0] + '#vcont=' + document.getElementById('cto').title);
} else {
document.getElementById('aemail').href='mailto:' + emailaddr + '?subject=Ffmpeg%20Video' + encodeURIComponent(' ... ' + document.getElementById('mysubtwo').value.replace(/^Display$/g,'')) + '&body=' + encodeURIComponent(document.URL.split('?')[0].split('#')[0] + '#vcont=' + document.getElementById('resultav').value);
}
document.getElementById('aemail').click();
}
}

function documentgetElementByIdmysubpclick() { // new arrangement for the programmatic click of form submit button
if (eval('' + document.getElementById('resultav').value.length) < 300) {
document.getElementById('myiftwo').src=document.URL.split('?')[0].split('#')[0] + '?becomes=' + encodeURIComponent(document.getElementById('becomes').value) + '&browsed=' + encodeURIComponent(document.getElementById('resultav').value);
} else {
document.getElementById('mysubp').click();
}
}

“; ?>

… in our changed third draft of Your Own Ffmpeg Video Changes, which can be that much more useful in a new way in the AlmaLinux web server environment.

Previous relevant Ffmpeg User Defined Browsed Video Editing Tutorial is shown below.

Ffmpeg User Defined Browsed Video Editing Tutorial

Today’s work, onto yesterday’s Ffmpeg User Defined Video Editing Tutorial, is to loosen the restrictions regarding “input video file source” we had happening in that “first draft” incarnation of our Ffmpeg User Defined Video Editing web application.

In order to achieve this, we called on a previous Ffmpeg Install and Public Face Tutorial inspired change to our inhouse macos_ffmpeg_convert.php PHP web application, which can serve as our conduit to either/or …

• browse for a video file off the user local operating system environment … or …
• path to a web server placed video file … or …
• URL to a video file

… extra means by which the user can define the “input video file source” that we’re loosening the shackles regarding usage.

To do this, we look for user actions (via PHP writing out Javascript) …

<?php echo ”

var lastpathc='';
var lastopathc='';
var lastvidc='';
var lastvalue='.m4v';
var exactvalue='';
var vext='.mp4';

function lookfor() {
vext='.mp4';
var thisext='';
if (document.getElementById('opath').value != '') {
if (lastopathc != document.getElementById('opath').value && document.getElementById('opath').title != document.getElementById('opath').value) {
lastopathc=document.getElementById('opath').value;
}
}
if (document.getElementById('path').value != '') {
if (lastpathc != document.getElementById('path').value) {
lastpathc=document.getElementById('path').value;
if (lastopathc == ' ') { lastopathc=document.getElementById('opath').value; }
}
}
if (lastopathc.trim() != '') {
thisext=(lastopathc + '.').split('.')[1].split('.')[0].trim();
if (thisext != '') {
document.getElementById('opath').title=lastopathc;
document.getElementById('path').title='video/' + thisext + ';' + lastpathc + lastopathc;
document.getElementById('resultav').value=lastpathc + lastopathc;
lastopathc=' ';
}
}
if (document.getElementById('resultav').value != '') {
if (lastvidc != document.getElementById('resultav').value) {
if ((document.getElementById('path').title + document.getElementById('resultav').value).indexOf('video/') != -1) {
if (document.getElementById('ifbrowse').src.indexOf('=') != -1) {
document.getElementById('myaltin').value=decodeURIComponent(document.getElementById('ifbrowse').src.split('=')[1].split('&')[0].split('#')[0]);
}
if ((document.getElementById('path').title + document.getElementById('resultav').value).indexOf('video/') != -1) {
if (vext.indexOf((document.getElementById('path').title + document.getElementById('resultav').value).split('video/')[1].split(';')[0].split(',')[0]) == -1) {
vext='.' + document.getElementById('resultav').value.split('video/')[1].split(';')[0].split(',')[0];
document.getElementById('myaltin').value=document.getElementById('myaltin').value.split('.')[0] + vext;
document.getElementById('becomes').value=document.getElementById('becomes').value.split('.')[0] + vext;
}
}
lastvidc=document.getElementById('resultav').value;
document.getElementById('resultav').title='rework';
document.getElementById('mysubp').click();
setTimeout(function(){
if (1 == 1) {
document.getElementById('divvid').innerHTML=\"<video id=myinvideo style=width:95%; controls><source id=myinsource type='video/\" + vext.substring(1) + \"' src='\" + document.getElementById('resultav').value + \"'></source></video>\";
} else {
document.getElementById('myinsource').src=document.getElementById('resultav').value;
}
}, 2000);
//setTimeout(function(){
//document.getElementById('resultav').value='';
//}, 20000);
//alert(lastvidc);
setTimeout(lookfor, 23000);
return '';
}
setTimeout(lookfor, 3000);
return '';
}
}
setTimeout(lookfor, 3000);
return '';
}

setTimeout(lookfor, 3000);

“; ?>

… and then arrange the /tmp/ placed temporary video data via …

<?php

if (isset($_POST['browsed']) && isset($_POST['becomes'])) {
$fgccont='';
//file_put_contents('xzm.xzm', '1');
$outtmpfile=str_replace('+',' ',urldecode($_POST['becomes']));
//file_put_contents('xzm2.xzm2', $outtmpfile);
$outext=explode('.', $outtmpfile)[-1 + sizeof(explode('.', $outtmpfile))];
//file_put_contents('xzm3.xzm3', str_replace(' ','+',urldecode($_POST['browsed'])));
if (strpos(('xwq' . $_POST['browsed']), 'xwqdata') !== false) {
file_put_contents(str_replace('+',' ',urldecode($_POST['becomes'])), base64_decode(explode(";base64,", str_replace(' ','+',urldecode($_POST['browsed'])))[1]));
} else if (strpos(('xwq' . strtolower($_POST['browsed'])), 'xwqhttps') !== false) {
$fgccont=file_get_contents('http' . substr(str_replace('+',' ',urldecode($_POST['browsed'])),5));
if (trim($fgccont) != '') {
file_put_contents(str_replace('+',' ',urldecode($_POST['becomes'])), $fgccont);
}
} else if (strpos(('xwq' . strtolower($_POST['browsed'])), 'xwqhttp') !== false) {
$fgccont=file_get_contents('http' . substr(str_replace('+',' ',urldecode($_POST['browsed'])),4));
if (trim($fgccont) != '') {
file_put_contents(str_replace('+',' ',urldecode($_POST['becomes'])), $fgccont);
}
} else if (strpos(('xwq' . strtolower(str_replace('+',' ',urldecode($_POST['browsed'])))), 'xwq//') !== false) {
$fgccont=file_get_contents('http:' . substr(str_replace('+',' ',urldecode($_POST['browsed'])),0));
if (trim($fgccont) != '') {
file_put_contents(str_replace('+',' ',urldecode($_POST['becomes'])), $fgccont);
}
} else if (strpos(('xwq' . strtolower(str_replace('+',' ',urldecode($_POST['browsed'])))), 'xwqwww.') !== false) {
$fgccont=file_get_contents('http://' . substr(str_replace('+',' ',urldecode($_POST['browsed'])),0));
if (trim($fgccont) != '') {
file_put_contents(str_replace('+',' ',urldecode($_POST['becomes'])), $fgccont);
}
} else if (file_exists(str_replace('+',' ',urldecode($_POST['browsed'])))) {
file_put_contents(str_replace('+',' ',urldecode($_POST['becomes'])), file_get_contents(str_replace('+',' ',urldecode($_POST['browsed']))));
}
//file_put_contents('xzm4.xzm4', explode(";base64,", str_replace(' ','+',urldecode($_POST['browsed'])))[1]);
exit;
}

?>

… all the while being helped out by a tweaked macos_ffmpeg_convert.php works Ffmpeg Converter Tool PHP web application helper to our changed second draft of Your Own Ffmpeg Video Changes, which can be that much more useful in a new way in the AlmaLinux web server environment.

Previous relevant Ffmpeg User Defined Video Editing Tutorial is shown below.

Ffmpeg User Defined Video Editing Tutorial

Today we’re combining video contents from …

• yesterday’s Ffmpeg Helps iPhone Video to YouTube Tutorial … with …
• our newly created public interface to ffmpeg with the “soon to be DNS version of rjmprogramming.com.au … but not yet” AlmaLinux Apache/PHP/MySql web server install we talked about at Ffmpeg Install and Public Face Tutorial … and …
• IP address redirecting, as needed, ifconfig (via PHP shell_exec and $_SERVER[‘SERVER_ADDR’]) based logic …
  <?php
  
$whereplace=shell_exec("ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'");
if (strpos(($whereplace . ' ' . $_SERVER['SERVER_ADDR']), '65.254.92.213') !== false) {
$sv='/usr/bin/ffmpeg';
header('Location: https://65.254.95.247/PHP/tmp_ffmpeg.php'); //$smallpath='https://65.254.95.247/PHP/'; //header('Location: https://65.254.95.247/PHP/tmp_ffmpeg.php');
exit; //exit;
}

  ?>
  … we talked about at AlmaLinux Landing Page WordPress Content Update Solution Tutorial … as well as …
• user definable form navigation … using …
• optional dropdown ideas incorporating ideas from Sepia Video via ffmpeg Primer Tutorial … and using …
• temporary storage places to place output video … and making use of …
• soft links regarding URLs we talked about at Linux Web Server Soft Link URL Tutorial (saving us having to use ‘data:video/mp4;base64,’ . base64_encode(file_get_contents(trim($endout))) style PHP interventions (which were testing friendships))

… to start down this road towards public facing ffmpeg video editing around here (which we have been hankering for for several years now).

In this first draft of Your Own Ffmpeg Video Changes (via command line ffmpeg) we’re really buttoning down (via not allowing the forward slash character in amongst the user defined ffmpeg command innards) what happens regarding …

• output video file source location … and …
• input video file source …
  

… but who knows what the future holds?!

Previous relevant Ffmpeg Helps iPhone Video to YouTube Tutorial is shown below.

Ffmpeg Helps iPhone Video to YouTube Tutorial

Today we recorded a video looking out from Govetts Leap, Blackheath, here in the Blue Mountains. We captured it via the Camera app on an iPhone via its Video option.

Nineteen seconds long, to share to this MacBook Air we needed AirDrop, the size of it precluding us from using the Photo app’s Mail sharing option.

And that’s where we wanted to use the great ffmpeg in an optimal way to create a video that we could upload to YouTube. In this, we arrived at this excellent link getting us to try …


ffmpeg -i govetts_leap.MOV -c:v libx264 -preset slow -crf 18 -vf scale=out_color_matrix=bt709 -color_primaries bt709 -color_trc bt709 -colorspace bt709 -c:a aac -ar 48000 -ac 2 -b:a 320k -profile:v high -level 4.0 -bf 2 -coder 1 -pix_fmt yuv420p -b:v 10M -threads 4 -cpu-used 0 -r 30 -g 15 -movflags +faststart govetts_leap.mp4


… with success. Checking with this other excellent link, thanks, we were comforted that they would have recommended an output mp4 file format as well, it seems …

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