How to add MP3 audio delayed in MP4 video?


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FFMPEG Command: Add MP3 Audio file delayed in MP4 video file

# ffmpeg.exe -i “fox-story.mp4” -itsoffset 5.00 -i “fox-story.mp3” -map 0:v -map 1:a -vcodec copy -acodec copy “The Fox and Crow Story.mp4”

Input: fox-story.mp4 and fox-story.mp3
Output: The Fox and Crow Story.mp4

-itsoffset 5.00 -i “movie.mp3”
Offsets timestamps of audio streams by 5.00 seconds

-map 1:v -map 0:a
Takes audio stream from the second (delayed) input and video stream from the first input

Song Lyrics: lrc2srt and srt2json


Hits: 385  

LRC2SRT.php

<?php

function lrc2srt( $lrc ) {
	$lrc = explode( "\n", $lrc );
	$srt = "";
	$lines = array();
	foreach ( $lrc as $lrcl ) {
		if ( preg_match( "|\[(\d\d)\:(\d\d)\.(\d\d)\](.+)|", $lrcl, $m ) ) {
			$lines[] = array(
				'time' => "00:{$m[1]}:{$m[2]},{$m[3]}0", // convert to SubRip-style time
				'lyrics' => trim( $m[4] )
			);
		}
	}
	for ( $i = 0; $i < count( $lines ); $i++ ) {
		$n = $i + 1;
		$nexttime = isset( $lines[$n]['time'] ) ? $lines[$n]['time'] : "99:00:00,000";
		$srt .= "$n\n"
		     .  "{$lines[$i]['time']} --> {$nexttime}\n"
		     .  "{$lines[$i]['lyrics']}\n\n";
	}
	return $srt;
}

echo "<pre>";
echo lrc2srt( file_get_contents("FileName.lrc") );
echo "</pre>";

?>

SRT2JSON.php

<?php

define('SRT_STATE_SUBNUMBER', 0);
define('SRT_STATE_TIME',      1);
define('SRT_STATE_TEXT',      2);
define('SRT_STATE_BLANK',     3);

$lines   = file("FileName.srt");

$subs    = array();
$state   = SRT_STATE_SUBNUMBER;
$subNum  = 0;
$subText = '';
$subTime = '';

foreach($lines as $line) {
    switch($state) {
        case SRT_STATE_SUBNUMBER:
            $subNum = trim($line);
            $state  = SRT_STATE_TIME;
            break;

        case SRT_STATE_TIME:
            $subTime = trim($line);
            $state   = SRT_STATE_TEXT;
            break;

        case SRT_STATE_TEXT:
            if (trim($line) == '') {
                $sub = new stdClass;
                $sub->number = $subNum;
                list($sub->startTime, $sub->stopTime) = explode(' --> ', $subTime);
                $sub->text   = $subText;
                $subText     = '';
                $state       = SRT_STATE_SUBNUMBER;

                $subs[]      = $sub;
            } else {
                $subText .= $line;
            }
            break;
		
    }
		
}

echo "<pre>";
print_r($subs);
echo "</pre>";


$count = count($subs);
 
for($i=0;$i<$count;$i++)
{


$playlist['ID'.$i] = array($subs[$i]->text, $subs[$i]->startTime, $subs[$i]->startTime, $subs[$i]->stopTime);


}

echo  json_encode($playlist);

?>

MistServer PHP API for Live Stream


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MistServer is a highly versatile, lightweight, customizable open-source multi-standard multimedia server. MistServer configuration is easy to use for full CDN solutions applications. Hope you already read our article to Install MistServer

Mistserver Manager Login

MistServer API provides a Server API and a Management API.

You can find MistServer PHP API Examples Here

Note: Make sure port 4242 used for MistServer is open on your web hosting firewall where you run MistServer PHP API for Live Stream

MistServer PHP API for Live Stream will try to put/get data using PHP CURL in port 4242

$server = new Mistserver();
$server->login(‘http://server-ip:4242/api’, ‘username’, ‘password’);

// you can add a live stream:
$server->add_stream( STREAM_NAME, push://@SOURCE, BUFFER_TIME);

mistserver-api-form

Your channel has been successfully created. Use the details below to broadcast:
Download: Download Flash Media Live Encoder 3.2
FMS URL: rtmp://server-ip:1935/live
Stream Name: churchstream

mistserver-stream

As you get Live Media Stream details you can use our article to make your event live…
Live video stream event for online Temple or Church

API Call Reference: http://www.mistserver.org/doxygen/api.html

JSON2CSV – convert json files to csv


Hits: 8342  

JSON2CSV is a python script that converts json data to a csv file.

json2csv

json2csv.py_.txt

Download above text file “json2csv.py_.txt” then rename “json2csv.py”

>> python json2csv.py “input.json” “output.csv”

JSON – input.json

[
{
“createdAt”: “2014-02-20T18:15:56.818Z”,
“fbID”: “34534534534”,
“lessonQuestions”: 5,
“lessonScore”: 2750,
“lesson_no”: 2,
“objectId”: “htmsuPr6F6”,
“updatedAt”: “2014-02-22T15:42:38.166Z”
},
{
“createdAt”: “2014-02-21T16:45:52.550Z”,
“fbID”: “100001132788807”,
“lessonQuestions”: 5,
“lessonScore”: 1100,
“lesson_no”: 3,
“objectId”: “xgmJxEyBHl”,
“updatedAt”: “2014-02-22T18:14:38.107Z”
}
]

CSV – output.csv

createdAt, fbID, lessonQuestions, lessonScore, lesson_no, objectId, updatedAt
2014-02-20T18:15:56.818Z, 34534534534, 5, 2750, 2, htmsuPr6F6, 2014-02-22T15:42:38.166Z
2014-02-21T16:45:52.550Z, 100001132788807, 5, 1100, 3, xgmJxEyBHl, 2014-02-22T18:14:38.107Z

Ref: https://github.com/vladikk/json2csv

Facebook Adding an App to a Page


Hits: 6634  

You can provide App to Fan Page Tab using URL, but you must check below options to get App (Page Tab) Added Page ID?

https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&next=YOUR_URL

After successful authorization users will redirect to your Site URL with pageID

http://www.domain.com/?tabs_added[pageID]=1#_=_

App Page Tab Settings
App Page Tab Settings
Add Page Tab Dialog
Add Page Tab Dialog

Integrating with Facebook APIs

When a user selects Page Tab and authorize your application, you receive the signed_request parameter with one additional parameter, page.

JSON object
id (the page id of the current page)
admin (if the user is a admin of the page)
liked (if the user has liked the page).

Option 1: Canvas Page
$signedRequest = $facebook->getSignedRequest();

Option 2: App Domain / Site URL
if(array_key_exists(‘tabs_added’, $_REQUEST)) {
$id = array_keys($_REQUEST[‘tabs_added’]);
$pageId = $id[0];
echo $pageId;
}

Option 3: Page Tab URL
if (!empty($_REQUEST[‘signed_request’])) {
list($encodedSig, $payload) = explode(‘.’, $_REQUEST[‘signed_request’], 2);
$requestData = json_decode(base64_decode(strtr($payload, ‘-_’, ‘+/’)), true);
if (!empty($requestData[‘page’]) && isset($requestData[‘page’][‘id’])) {
$pageId = $requestData[‘page’][‘id’];
echo $pageId;
}
}

Option 4: App Domain / Site URL

<div id='fb-root'></div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script src='http://connect.facebook.net/en_US/all.js'></script>
<p><a onclick='addToPage(); return false;'>Add to Page</a></p>
<p id='msg'></p>

<script> 
  FB.init({appId: "APP_ID", status: true, cookie: true});

   function addToPage() {

  // calling the API ...
  FB.ui(
    {
        method: 'pagetab'
    },
    function(response) {
        if (response != null && response.tabs_added != null) {

            $.each(response.tabs_added, function(pageid) {
                  alert(pageid);
            });
        }
    }
  );


  }

</script>

Your app will also receive string parameter app_data as part of signed_request if app_data parameter was set in the original query string in the URL your tab is loaded on.

“https://www.facebook.com/YourPage?v=app_APP_ID&app_data=STRING”

Swiffy converts Flash SWF files to HTML5


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I was working on Video Ads system for a client. I need a solution that can display ads on devices like Android / iPhone / iPad where flash is not supported.

So, after few searches I got SWIFFY … this is really very good tool to convert Flash files to html5. I tried some flash files and output html5 is working awesome on all devices 😉

Swiffy converts Flash SWF files to HTML5, it allows to reuse Flash content on devices (iPhones, iPads and Androids) without a Flash player.

Swiffy 5.0 introduces experimental support for ActionScript 3.0.

Swiffy users can publish Flash files to HTML5 right from Adobe Flash Professional.

Google Swiffy Extension
Google Swiffy Extension

Swiffy converts a SWF file to an HTML5 page as a JSON object. The HTML5 page uses the Swiffy Runtime JavaScript library to render the animation using SVG. Compiled ActionScript code is also contained in the JSON file and executed as JavaScript in the browser.

Google Swiffy Features
Google Swiffy Features

Original Flash animation

Swiffy conversion

swiffyobject = JSON object returned from SWF File

var stage = new swiffy.Stage(document.getElementById(‘swiffycontainer’), swiffyobject);
stage.start();