Over the past couple of months I have noticed that when I play a published project on a projector, the timing of the animations is not in sync with the audio ... while when I play the same published file on my computer on or the LMS, the timing is right.
Do you know why this is happening and how I can fix that?
The courses that I create are for a large audience who will, in some cases, sit together in a classroom to watch the course. This issue could be a major drawback to the effectiveness of the course.
Are you connecting the computer to to projector directly or are you using a network to get the project to the projector?
I have noticed that when i use a network to stream a project, the timeline gets skewed slightly.
if you are directly connecting, how?
Using a VGA to the projector and sound cords to the speakers separately could cause a delay in the audio or the video. I try to use a HDMI connection when I can, to avoid the lag, then use the projectors audio connections to connect to the speakers.
Thanks for the quick reply, Terry. My apologies for the incorrect information, but in fact I am not connecting the laptop to a projector directly, but rather using a wire that connects to another (bigger) screen. It is duplicating (or extending) my laptop screen to that projected screen.
Does that make any difference to what you are suggesting?
Is there a way for you to load the project onto the bigger screen in another manner... thumb drive, or dvd?
It could be working your laptop too hard by using the resolution from your laptop on the bigger screen. Using a DVD would be the best way to make sure everything would scale up properly.
Unfortunately not. It has to go through the laptop directly as the courses will be typically be launched from an LMS. Thanks a lot for your insights though !
It sounds more and more like the laptop graphics card is working being overworked. Most laptops GPU's (Graphics Processing Unit) is only powerful enough for the resolution on the laptop screen. the bigger the screen added the more it has to work to display properly. on the busier slides, the task of displaying the visual effect and audio effects are too much for the GPU
you might think about using a networked pc to run the larger screen only. by doing that you will be focusing on one screen only and it should fix the issue.
Just an FYI Sophie - responding via email includes your signature here but you're welcome to edit the post if you would like to remove the information.
15 Replies
Question:
Are you connecting the computer to to projector directly or are you using a network to get the project to the projector?
I have noticed that when i use a network to stream a project, the timeline gets skewed slightly.
if you are directly connecting, how?
Using a VGA to the projector and sound cords to the speakers separately could cause a delay in the audio or the video. I try to use a HDMI connection when I can, to avoid the lag, then use the projectors audio connections to connect to the speakers.
Hope I helped!
Thanks for the quick reply, Terry. My apologies for the incorrect information, but in fact I am not connecting the laptop to a projector directly, but rather using a wire that connects to another (bigger) screen. It is duplicating (or extending) my laptop screen to that projected screen.
Does that make any difference to what you are suggesting?
Sophie,
Are you using the laptops speakers, or another sound source?
I don't use the laptop's speakers - I use the audio system of the big screen.
Is there a way for you to load the project onto the bigger screen in another manner... thumb drive, or dvd?
It could be working your laptop too hard by using the resolution from your laptop on the bigger screen. Using a DVD would be the best way to make sure everything would scale up properly.
Unfortunately not. It has to go through the laptop directly as the courses will be typically be launched from an LMS. Thanks a lot for your insights though !
how much of a delay are we talking about? milliseconds or seconds?
The delay is about a second
on all slides or just the busier ones?
Just the busier ones - those that only have a couple of entrance and exit animations seem to be fine.
Sophie,
It sounds more and more like the laptop graphics card is working being overworked. Most laptops GPU's (Graphics Processing Unit) is only powerful enough for the resolution on the laptop screen. the bigger the screen added the more it has to work to display properly. on the busier slides, the task of displaying the visual effect and audio effects are too much for the GPU
you might think about using a networked pc to run the larger screen only. by doing that you will be focusing on one screen only and it should fix the issue.
Hope i helped.
Got it. Thanks a lot for the tip, Terry - it is indeed very useful !
Just an FYI Sophie - responding via email includes your signature here but you're welcome to edit the post if you would like to remove the information.
Oops... Thanks for pointing that out Ashley. Great that we're able to update the posts then!
No worries Sophie - we like to point it out in case it's something you don't want to share. Doesn't bother us! ;-)
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