Webm video loses play synchronization and after some time only white screen apperas

  • 1
  • Problem
  • Updated 4 years ago
  • Not a Problem
  • (Edited)
Hi team Rise Vision

We are using Intel NUC which runs on windows 8.1. We are using 23" dell monitors in vertical position and presentations that runs on 1920x1080 resolution.

First presentation have a couple of placeholders, weather, date, time, and one placeholder that shows images.

Second presentation is a fullscreen video presentation that only plays videos.

These presentations are in one schedule. The time for how long the presentations are shown are based on number of images on first one (each image = 10 seconds) and length of the videos on second one.

We used .mp4 videos for fullscreen presentation, but the video is a bit choppy. So i have converted a video to .webm format using miro converter and now video plays flawlessly but other problem occured.

While the first presentation runs fine, the second one gets desynchronized after a while.

Right now the first presentation is running for 40 secs, then switches to second one which runs for 16 seconds based on the length of the video in the presentation.

First 2 or 3 loop times everything is running fine. afterwards, when video presentation switches, it starts with the end of the video, and starts playing video again and respectively after 16 seconds switches to first presentation without ending the video. next loop again continues where it was cut out, and so on.

And also, after lets say 10-15 loops, the fullscreen presentation show only one white screen and not playing the video at all.

Update: I looked up in the topics regarding white screen, and turned of the firewall and so far i didnt get the white screen. ill keep you posted about this problem if occurs.

Update 2: The white screen still occurs after a couple of loops.

I didnt had problem with this when using .mp4 videos only with .webm videos.

any advice or help would be appreciated.

Thanks in advance
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Fifthscreen Doo

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Posted 4 years ago

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Neal

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I would suggest adding the first Presentation to the one with the Video (you can add it as a Presentation Item) so that there is only the one Presentation in the Schedule.  The video should be set to play until done and that will prevent it from losing its sync.  When you add multiple Presentations in a Schedule, there isn't an option for it to play until done and since the timing of the Duration is to the exact second, videos may not complete, or they may start over prior to that time. I haven't come across the white screen recently, and its possible that the above setup may take care of what you're seeing as well. I don't recall the last time I tried a Schedule like the one you're using, but will do so today.

Thanks
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Fifthscreen Doo

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thanks alot. that helped. however the problem with white screen still persists

here is the preview

http://preview.risevision.com/Viewer.html?type=presentation&id=3ddb7eb8-2a13-4aa0-9c80-15568ec68...
(Edited)
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Neal

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I've been running a copy of the Presentation on my Display for most of the day and I haven't seen any problems with the videos not showing up.

Can you try restarting the Player via the button on the Display's page to see if that corrects what you're seeing?  Also, it may be an idea to clear out

It may also be an idea to try clearing out the files out of C:\Users\%username%\AppData\Local\RVPlayer\RiseCache\cache just in case some of them are corrupted and are contributing to what you're seeing.

Thanks.
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Fifthscreen Doo

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when i restart the player its running fine for lets say 15 minutes or so, afterwards, same thing. for the period of videos, the screen stays white, switches back to presentation with date clock etc which is working fine, then again when its time for video, white screen again.

I have just updated NUC display drivers and cleared cache, i will let you know if that helped.

Update:

Yep after 45 mins or so white screen appeared again.

Thanks
(Edited)
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Fifthscreen Doo

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A little heads up on my problem with white screen. After reading alot about chrome and webm files, i managed to solve the problem by using rise player app in chrome instead of risevision player.

However, when i put a presentation which runs on 40 seconds and afterwards two video files, its working fine. if i put more than two files i have a blank white screen between videos, it last only for like a half of the second but its there.

The question i would like to ask is: When i install risevision player does it works as a standalone chrome, or does it take settings from chrome browser i already have installed.

Because the problem solver is vlc plugin that chrome browser has in itself thats why the video is working for 2 days straight now. If risevision player works as a standalone chrome, i dont think it has that plugin built in so thats why im keep having problems with player.

Also i would like to note that this problem is only NUC related. I have tested this presentation on 3 different machines using risevision player, not app, and i dont get white screen.

Also one more question: I managed to setup the app just fine, its working normally, starts automatically when windows starts but it dont seem to start again if i close the app. Like player when you turn it off with alt+f4, it starts again automatically after a couple of minutes, the app doesnt do that.

is there a chance to maybe set that up as well?
(Edited)
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Neal

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Sorry, I thought I responded to this previously.

The Rise Vision player uses a separate version of Chrome without any plugins installed (ie standalone).

The Chrome App player doesn't have the same watchdog to monitor if Chrome stops responding. If you're looking to restart it after it closes, you can just use the shortcut in the startup folder to open it back up.

Thanks.
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Jay S

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Hi there, is this issue considered resolved? I have the exact same issue it seems, although I am using Chrome app player. Videos work for a while (not sure exactly how long), then become white screen until restart. Using WebM video hosted on an internal server. Not using Play Until Done, just matching the video length in the schedule.
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Fifthscreen Doo

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Hi Jay

Just use master presentation and Play Until Done. It worked for me
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Jay S

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Thanks very much Fifthscreen for the reply, we did have everything embedded in one presentation with play until done, and that seemed to introduce other problems, so as part of troubleshooting we took that out of the equation -- and now this.

We may go back to trying that method as you suggest, unless someone else can provide a reason for the white screen videos, or an alternate solution.
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Jay S

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yes, we did notice some restarts, but not sure how often. We have reason to believe we were getting network dropouts during this time, so I assume that would have caused the restarts.

We are removing the videos for now so we can proceed with our launch without adding any more variables, and we'll retry embedding the presentations in the next week or two and see how that goes.

thanks!

jay
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Jay S

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Hi Neal, I'm not 100% sure, but it seems to be that whenever the display is powered off, after turning it back on the cursor displays on-screen, and the videos just show as white. After restarting the player, all seems well.

Is that an expected result? Could it be a video ram issue of some kind after the computer looses the hdmi connection?

Windows 7, Chrome player, Lenovo M-series TinyPC (intel HD graphics, etc)

We are trying to keep the displays on 24/7, but some people just like pressing buttons I guess...
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Fifthscreen Doo

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you can set pc buttons in windows to do nothing when pressed. We are using Intel NUCs, which only have one button (power button). Settings/control panel/power options/ choose what power button does, and set to "do nothing" that way no one can turn off your pc. and when its off, the power button will work. Also make sure you set up in bios, that when you have the power outage of some sort, to turn on automatically when the power is back on.

As for cursor staying onscreen, we have that problem aswell after restart, not everytime, its totally random, but since our master presentation lasts 6 minutes or so, when starting the second cycle, the cursor vanishes.

Also we had some problems with webm videos and white screen even when using master presentation. If i put 2 videos to play one after another, its ok, if there are more than two videos playing after each other, the white screen will occur.

Here's what i did. we have three videos playing after each other. What i did was, i used AVS video remaker (its free), and joined the three videos and made a single video file out of them. saved them as mp4 as program does not support webm extension, and then converted the newly joined video into a webm using Miro Converter. That way risevision sees those three joined videos as a single video webm file.

Maybe that will help.

cheers
(Edited)
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Jay S

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Thanks, but I should have clarified, it is when the actual TV is powered off, and powered back on, the videos are white. I assume the computer sees that HDMI is unavailable, and maybe clears video out of  VRAM (or something, I don't know...). After restarting the display in Risevision, videos work again.
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Neal

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It does sound like the HDMI has gone to sleep, and doesn't recover when the TV comes back on.
Are you using a consumer screen for the Display, or is it a commercial model?