Some videos not playable in Wordpress posts or pages

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Hi all,

I have 9 local MP4 (1412x1012) videos which I added by pasting the link without any formating in a WordPress page.

For a reason that I cant get to understand videos from 1 to 7 play OK and the player shows ok too.
But for videos 8 and 9 I see a grey bar on the player and if I click on the play button of these two videos I just getting kind of a buffering status, they will never be played.

I´ve double checked the links and they are correct pointing to a local server without any issues the same place the other videos are.

There is not coding at all, just the pure link so that Wordpress can show the player.

I even lowercased all the filenames and links accordingly as I read this could help me solve it but it didnt.

Wordpress latest version.

Any ideas what could this be?

As an example here a print screen of a video showing OK (this video is playable):

This is an example of a video showing ok
And here one that is not showing OK (this video is not playable):

This is an example of a video not showing ok

Thanks in advance for your help and tips!

Fernando
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Scott FellDeveloper & EE Moderator
Fellow 2018
Most Valuable Expert 2013

Commented:
Fernando, the only clue from your picture is the videos are different formats.  Please post the link to your site so we can see the actual problem.

Author

Commented:
Thanks for your comments Scott, the site is internal. The videos are exactly the same format, exported them from Camtasia all the same way, same configuration so its not related to the format of the video.

Thanks!
Scott FellDeveloper & EE Moderator
Fellow 2018
Most Valuable Expert 2013

Commented:
There is no way to tell what is the issue is from  your pictures.  However, the pictures are in different sizes meaning you either cropped the first image or they are in different formats.  

In any case, there is no way we can help you from your images.

Try using mpegstreamclip on your current videos http://www.squared5.com/ and save them as h.264 with a bit rate of no more then 1000 and no larger then 750p although smaller would be better.

If your 1 minute video is larger than 10 to 15megs, it's too big.  The two ways with the most impact to make your  video smaller is with the bitrate and physical size.  I found if you bring the bit rate down too much, the video does not look good.  

If you still can't get this to work, you are just going to have to post a live link to your page.
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Author

Commented:
Thanks for your comments, I will check and come back to you.
Scott FellDeveloper & EE Moderator
Fellow 2018
Most Valuable Expert 2013

Commented:
Are you able to post the code you are using?  View Source, copy and paste?  Maybe there is a coding error?
Jason C. LevineDon't talk to me.

Commented:
Because WordPress is displaying the player, it at least is recognizing the video files as videos.  The grey bar may be an attempt at letter boxing although why it will show up on one video and not another is anybody's guess.

One thing about mp4 streaming over http is the moov atom.  If the moov atom is not at the beginning of the file after encoding, it won't stream...it will have to fully download before playback will begin.

http://www.adobe.com/devnet/video/articles/mp4_movie_atom.html

Author

Commented:
Thanks for your comments Jason. The videos with the grey bar never get to play. If I move the videos to independent pages then the problem dissapears also with the videos that were actually not playing if placed all in the same page. So the problem is not related to the video itself.

It looks as if it is a limitation of Wordpress or the server not being able to show more than X amount of players? I really dont know, just thinking out loud...

Thanks for your help!
Jason C. LevineDon't talk to me.

Commented:
Are all nine videos on one page?

Author

Commented:
Yes, exactly :)
Jason C. LevineDon't talk to me.

Commented:
Yeah, it could very well be some form of rendering error/memory issue. You'll notice that YouTube, with basically unlimited resources, doesn't try that :)
:)

Thanks for your comment. I detected one problem on one of the videos, the filename was too long, once I shorten it , it started working, but in a separate page. :)

Author

Commented:
Myself.

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