By chydock - 5/5/2014
I am trying to upload 3 videos to a web script. Two of the three (13,050 kb, and 16,150 kb) uploaded fine.However, when uploading the third (20,962 kb), there is an error at 99% complete every time.
They are all mpeg II (.vob).
HTTP Error, '500' occurred. Internal Server Error. Usually it means that receiving script have errors. |
By Dave - 5/5/2014
The total storage space for each web experiment is limited to a certain amount. Your video files exceed that limit, hence the error. What you can do:
(1) Reduce file sizes as much as possible.
(2) If (1) is not enough, contact inquisit<at>millisecond.com with your account details and ask if the storage quote can be increased.
In general keep in mind though that all required files must be fully downloaded to each and every participant's machine before the experiment can start. With many or exceedingly large files, this process can be (a) rather slow (depending on the client's internet connection speed, server load, etc.) and lead to people dropping out because of the long load times and (b) prone to failing, particularly for people on a somewhat unreliable connection.
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By chydock - 5/5/2014
I don't have access to much video editing software, given this is there another video format that would take less space but still be well supported for the web-script?
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By Dave - 5/5/2014
It's not possible to give a generically correct answer to this question. It entirely depends on your requirements (video quality, resolution, duration, etc). MPEG-II is a good choice in terms of cross-platform compatibility, but it's not a particularly efficient codec in terms of quality/filesize ratio.
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By Diane - 5/25/2014
Where can I find guidelines on what sizes for picture/video files are still okay? Which is more important, file size or total size for all files for an experiment?
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By Dave - 5/25/2014
> Where can I find guidelines on what sizes for picture/video files are still okay?
For web experiments you should generally aim for the smallest file sizes possible.
> Which is more important, file size or total size for all files for an experiment?
Total size for all files. Try to keep it below ~30MB, but the lower, the better.
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