IQ7 App Battery Abort Tablet


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Dave
Dave
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pinguin - 5/2/2025
Hi Dave,

Thank you for your continued commitment to helping us get our experiment up and running—we really appreciate your support.

On the Samsung Galaxy Tab A7s, the tests are now running smoothly.

However, we did some more testing with other devices and we are still running into issues with our battery.

On an iPad Pro (2021), the error was:
pause1min.iqx - Unable to load video. Error playing 'Pause_1min.mp3'. Format not supported on this device.
—> This seems odd, as this iPad has 8GB of RAM.

The same was true for a Lenovo IdeaPad 5 and an iPad Air (5th generation).

On another iPad (approximately 2018), the battery aborted right before the script „_gc_klasse1_mathe.iqx“. Unfortunately, our student assistant did not photograph the error message. As „pause1min.iqx“ is presented right before this script again, maybe it has something to do with this - although this was at a much later position of the batch.

We have more questions and would appreciate your input:

1) Is RAM really the issue?
2) Is there something wrong with the file „Pause_1min.mp3“?
3) Is there any other way that we could adjust our programming so that it runs more stable, independent of the end device we will be using?
4) Do you see any more potential in shrinking any other files? Should we change the format of any of our pictures and/or sound files?
5) Is there any other way for us to run our tests? For example, if we used two separate links (i.e., two uploaded experiments) and we started with EXP1 - can we somehow transfer the subject IDs to EXP2 without typing those in manually on each given tablet?

In short: How can we keep the barrel from overflowing?

This is the most recent link: https://mili2nd.eu/eljc

Again, thank you for your support.

Best,

pinguin

1) Is RAM really the issue?

On some devices, probably. On others it may be something else. That a device has 8GB of RAM means very little. The important factor is how much of that RAM is available for Inquisit to work with. I've seen beefy iPads which had a mere 40MB of free RAM available, and 7+GB clogged up by iPadOS itself and other apps.

2) Is there something wrong with the file „Pause_1min.mp3“?

The file is mono, which some systems don't like. It's also just one second long and completely silent. Looking at the script, I can't figure out what it's purpose is or why it's needed to begin with. The pause script also suffers from various syntax issues. None of these should be critical, but who knows. The script seems ancient.

3) Is there any other way that we could adjust our programming so that it runs more stable, independent of the end device we will be using?

I can't answer that, as that would require an open-ended review of a dozen scripts. At a mimimum, I would revise legacy scripts such as the pause scripts and get rid of all the obsolete and deprecated syntax.

4) Do you see any more potential in shrinking any other files? Should we change the format of any of our pictures and/or sound files?

Nothing beyond what I said before.

5) Is there any other way for us to run our tests? For example, if we used two separate links (i.e., two uploaded experiments) and we started with EXP1 - can we somehow transfer the subject IDs to EXP2 without typing those in manually on each given tablet?

You can do that. Works no different than what's described at https://www.millisecond.com/support/docs/current/html/howto/interopsurveys.htm under "Sending the Subject ID from Inquisit to 3rd Party Sites", except you're sending the ID to another Inquisit launch page, which has to read the ID in as described under "Configuring Inquisit to Receive IDs from a 3rd Party Web Site."
pinguin
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Thank you for your fast reply.

We will clean up the scripts and see where this takes us. 

The "Pause_1min.mp3" should not be silent - I have tried it today and it worked. The file contains someone saying "Jetzt hast du Pause" ("Now you can take a short break"). 

Re the Subject IDs: This is interesting to know. Before we try that: Would it also work, when we test completely offline?

Dave
Dave
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pinguin - 5/2/2025
Thank you for your fast reply.

We will clean up the scripts and see where this takes us. 

The "Pause_1min.mp3" should not be silent - I have tried it today and it worked. The file contains someone saying "Jetzt hast du Pause" ("Now you can take a short break"). 

Re the Subject IDs: This is interesting to know. Before we try that: Would it also work, when we test completely offline?

> Would it also work, when we test completely offline?

No.
Dave
Dave
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Dave - 5/2/2025
pinguin - 5/2/2025
Thank you for your fast reply.

We will clean up the scripts and see where this takes us. 

The "Pause_1min.mp3" should not be silent - I have tried it today and it worked. The file contains someone saying "Jetzt hast du Pause" ("Now you can take a short break"). 

Re the Subject IDs: This is interesting to know. Before we try that: Would it also work, when we test completely offline?

> Would it also work, when we test completely offline?

No.

As for the MP3, I would try re-encoding it to stereo at 128kbps.
GO

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