Order Now AdSolution Sign Up | Login » Bits on the Run Sign Up | Login »

Forums

JW Player
/
Setup Issues and Embedding

Large MP4 File Not Playing

6 replies [Last post]
Posted: Wed, 2009-02-18 16:57 PrecisionFlex
Anonymous's picture

Hello,

I have downloaded the JW FLV player and am hoping to use this commercially for my website but am unable to get the behavior that I require from this player, currently.

To describe in more detail, I currently have two movie files. One movie file is called PF-HomePage.mp4. This file is ~21MB and plays correctly. The second movie file I have is called pflex_FINAL.mp4, it is ~121MB and does not play correctly. The audio of this second video plays, but the video does not seem to play at all.

I have set up a page where I am testing the behavior of this player at http://www.precisionflex.com/mediacenter2.html

Below is the code I am using:

/*
* This video works.
*/
<p id='preview'>The player will show in this paragraph</p>

<script type='text/javascript' src='swfobject.js'></script>
<script type='text/javascript'>
var s1 = new SWFObject('player-viral.swf','player','400','300','9');
s1.addParam('autostart','true');
s1.addParam('allowfullscreen','true');
s1.addParam('allowscriptaccess','always');
s1.addParam('flashvars','&file=http://www.precisionflex.com/img/PF-HomePage.mp4&title=PrecisionFlex&autostart=true&controlbar=over&...');
s1.write('preview');

/*
* This video does not work. Audio only.
*/
<p id='preview'>The player will show in this paragraph</p>

<script type='text/javascript' src='swfobject.js'></script>
<script type='text/javascript'>
var s1 = new SWFObject('player-viral.swf','player','400','300','9');
s1.addParam('autostart','true');
s1.addParam('allowfullscreen','true');
s1.addParam('allowscriptaccess','always');
s1.addParam('flashvars','&file=http://www.precisionflex.com/img/pflex_FINAL.mp4&title=PrecisionFlex&autostart=true&controlbar=over&...');
s1.write('preview');

Posted: Wed, 2009-02-18 22:35 lefTy  
Anonymous's picture

During encoding, did you choose the "fast start" option or after encoding, did you post-process the MP4 with MP4box or qt-faststart to move the MOOV atoms to the front of the file so it will start playing almost immediately?

Posted: Thu, 2009-02-19 19:29 Doublea  
Anonymous's picture

During encoding, did you choose the "fast start" option or after encoding, did you post-process the MP4 with MP4box or qt-faststart to move the MOOV atoms to the front of the file so it will start playing almost immediately?

Hi I am having the same problem, but I am using Any video Converter free, I will be encoding more movies soon, I will probably shell out the cash for a professional video converter soon. I have no clue how to check/preform what lefty has suggested here.

My mp4 files play just fine, they simply will not start until fully downloaded.

Thanks again

Posted: Thu, 2009-02-19 20:20 lefTy  
Anonymous's picture

Doublea,

Get qt-faststart from:

      http://ffmpeg.arrozcru.org/builds/

Place qt-faststart.exe with your MP4 files.

Then open a MS-DOS box, Command Prompt, whatever you like to call them, and navigate to the directory with the MP4 files and execute:

qt-faststart videofilename.mp4 videofilename.out.mp4

Posted: Sat, 2009-02-21 16:06 Doublea  
Anonymous's picture

Hello again, So I did what lefty said, It seemed to do something, ie: i figured out how to run the program atleast.

My mp4 now starts when it is about 3/4ths loaded instead of all the way. Its only a 9mb file, and its 1mbps.... (I think I may have made the file too large, I was confusing Mb with MB.

Place where the video is:

http:www.arcturus-uav.com/test2/videos-t-15.html

Posted: Sat, 2009-02-21 18:20 lefTy  
Anonymous's picture

Doublea,

Yeah, your video doesn't work very well.

It looks like you want your video to be around 450x300.

You will get much better compression if you size your video in exact multiples of 16, so 480x320 would be good.

Then size the player's display to be that exact size plus 20 for the control bar or 480x340. Re-sizing on the client takes a lot of CPU cycles, especially when the video is also downloading during the first few sconds or so. This results in 100% CPU usage, stuttering, pixelating, & crap. Also, for that size video a video bitrate of 396 to 484 is probably more than enough for good quality in H.264. Framerate of 20 or so is enough.

Re-encode, then run qt-faststart on it.

Posted: Sun, 2010-02-28 16:23 jess  
Anonymous's picture

when I click on an MP4 file to play in windows media player, it reads: 'windows media player encountered a problem while downloading the file for additional assistence, click web help.' and some videos it says that too, or just plays the sound.. help! ...please!!

I too am having a similar problem, but with all mp4 files and movie files.. but some do work for some reason.. ???

if anyone can help me, heres my email:number-1-red@hotmail.com

  • Locked