html5 비디오 함수

<label>oncanplaythrough: </label><span class="stats" id="cpt"></span><br />
<label>onloadstart: </label><span class="stats" id="ls"></span><br />
<label>onprogress: </label><span class="stats" id="pg"></span><br />
<label>onloadeddata: </label><span class="stats" id="ld"></span><br />
<label>onended: </label><span class="stats" id="ndd"></span><br />
<label>onemptied: </label><span class="stats" id="mt"></span><br />
<label>onstalled: </label><span class="stats" id="stall"></span><br />
<label>onwaiting: </label><span class="stats" id="waiting"></span><br />
<label>ondurationchange: </label><span class="stats" id="dc"></span><br />

<script>
var video = document.getElementById("Video1");
var vLength;
var pgFlag = ""; // used for progress tracking
if (video.canPlayType) { // tests that we have HTML5 video support

// video button helper functions
// play video
function vidplay(evt) {
if (video.src == "") { // inital source load
getVideo();
}
if (video.paused) { // play the file, and display pause symbol
video.play();
} else { // pause the file, and display play symbol
video.pause();
}
}

// load video file from input field
function getVideo() {
var fileURL = document.getElementById("videoFile").value; // get input field
if (fileURL != "") {
video.src = fileURL;
video.load(); // if HTML source element is used
document.getElementById("play").click(); // start play
} else {
errMessage("Enter a valid video URL"); // fail silently
}
}

// button helper functions
// skip forward, backward, or restart
function setTime(tValue) {
// if no video is loaded, this throws an exception
try {
if (tValue == 0) {
video.currentTime = tValue;
}
else {
video.currentTime += tValue;
}

} catch (err) {
// errMessage(err) // show exception
errMessage("Video content might not be loaded");
}
}

// change volume based on incoming value
function setVol(value) {
var vol = video.volume;
vol += value;
// test for range 0 - 1 to avoid exceptions
if (vol >= 0 && vol <= 1) {
// if valid value, use it
video.volume = vol;
} else {
// otherwise substitute a 0 or 1
video.volume = (vol < 0) ? 0 : 1;
}
}
// button events
// Play
document.getElementById("play").addEventListener("click", vidplay, false);
// Restart
document.getElementById("restart").addEventListener("click", function () {
setTime(0);
}, false);
// Skip backward 10 seconds
document.getElementById("rew").addEventListener("click", function () {
setTime(-10);
}, false);
// Skip forward 10 seconds
document.getElementById("fwd").addEventListener("click", function () {
setTime(10);
}, false);
// set src == latest video file URL
document.getElementById("loadVideo").addEventListener("click", getVideo, false);

// volume buttons
document.getElementById("volDn").addEventListener("click", function () {
setVol(-.1); // down by 10%
}, false);
document.getElementById("volUp").addEventListener("click", function () {
setVol(.1); // up by 10%
}, false);

// playback speed buttons
document.getElementById("slower").addEventListener("click", function () {
video.playbackRate -= .25;
}, false);
document.getElementById("faster").addEventListener("click", function () {
video.playbackRate += .25;
}, false);
document.getElementById("normal").addEventListener("click", function () {
video.playbackRate = 1;
}, false);
document.getElementById("mute").addEventListener("click", function (evt) {
if (video.muted) {
video.muted = false;
} else {
video.muted = true;
}
}, false);

// any video error will fail with message
video.addEventListener("error", function (err) {
errMessage(err);
}, true);
// content has loaded, display buttons and set up events
video.addEventListener("canplay", function () {
document.getElementById("buttonbar").style.display = "block";
}, false);

// display video duration when available
video.addEventListener("loadedmetadata", function () {
vLength = video.duration.toFixed(1);
document.getElementById("vLen").textContent = vLength; // global variable
}, false);

// display the current and remaining times
video.addEventListener("timeupdate", function () {
// Current time
var vTime = video.currentTime;
document.getElementById("curTime").textContent = vTime.toFixed(1);
document.getElementById("vRemaining").textContent = (vLength - vTime).toFixed(1);
}, false);
// paused and playing events to control buttons
video.addEventListener("pause", function () {
document.getElementById("play").textContent = ">";
}, false);

video.addEventListener("playing", function () {
document.getElementById("play").textContent = "||";
}, false);

video.addEventListener("volumechange", function () {
if (video.muted) {
// if muted, show mute image
document.getElementById("mute").innerHTML = "<img alt='volume off button' src='mute2.png' />";
} else {
// if not muted, show not muted image
document.getElementById("mute").innerHTML = "<img alt='volume on button' src='vol2.png' />";
}
}, false);
// Download and playback status events.
video.addEventListener("loadstart", function () {
document.getElementById("ls").textContent = "Started";
}, false);
video.addEventListener("loadeddata", function () {
document.getElementById("ld").textContent = "Data was loaded";
}, false);

video.addEventListener("ended", function () {
document.getElementById("ndd").textContent = "Playback ended";
alert('ended aaa');
}, false);

video.addEventListener("emptied", function () {
document.getElementById("mt").textContent = "Video reset";
}, false);

video.addEventListener("stalled", function () {
document.getElementById("stall").textContent = "Download was stalled";
}, false);
video.addEventListener("waiting", function () {
document.getElementById("waiting").textContent = "Player waited for content";
}, false);
video.addEventListener("progress", function () {
pgFlag += "+";
if (pgFlag.length > 10) {
pgFlag = "+";
}
document.getElementById("pg").textContent = pgFlag;

}, false);
video.addEventListener("durationchange", function () {
document.getElementById("dc").textContent = "Duration has changed";
}, false);
video.addEventListener("canplaythrough", function () {
document.getElementById("cpt").textContent = "Ready to play whole video";
}, false);
} else {
errMessage("HTML5 Video is required for this example");
// end of runtime
}
// display an error message
function errMessage(msg) {
// displays an error message for 5 seconds then clears it
document.getElementById("errorMsg").textContent = msg;
setTimeout("document.getElementById('errorMsg').textContent=''", 5000);
}
</script>