0 votes
in SoSci Survey (dt.) by s165850 (115 points)

We have 6 questions with short mp3 audio files (one short sentence is played). Some users wrote that they could not play some of the mp3 files when they opened the survey on the phones.They could click the play button, but only a segment shorter than one second was played. This happened to be the case on Android devices, but we don't know if it's only a coincidence. Have you had this issue before? Is there something we can do to solve this problem?

by SoSci Survey (302k points)
Did you upload the mp3 files to the "protected file storage" (pro:// prefix before the filename after upload)? There is a time limit, and if they play the files only after a minute or so, the protected file storage may have cause the Problem. How large are the files?
by s165850 (115 points)
I don't remember clicking on "use protected filing".
These are the sizes:
bs1_cut.mp3    39.7 KB    audio file   
bs2_cut.mp3    28.2 KB    audio file   
hr1_cut.mp3    40.2 KB    audio file   
hr2_cut.mp3    19.7 KB    audio file   
sr1_cut.mp3    43.7 KB    audio file   
sr2_cut.mp3    56.2 KB    audio file
by SoSci Survey (302k points)
> I don't remember clicking on "use protected filing".

Does the file listing display a pro:// before the filename?

Could you please post a pretest-link directly (!) to a page with a mp3 file?
by s165850 (115 points)
No, there is no " pro:// " before the filename.

This is the link:
https://www.soscisurvey.de/BKMS/index.php?i=LVWFIU2P6WOR&rnd=OOED

1 Answer

+1 vote
by SoSci Survey (302k points)

Ich habe eine Datei einmal heruntergeladen und mit VLC geöffnet. Folgende Medieninformation wird angezeigt:

Medieninformation

Was bedeutet das? Der Codec ist nicht (!) MPEG Layer 3 (mp3), sondern es handelt sich offenbar um eine .mpeg oder .mp2 Datei, welche nur als mp3-Datei umbenannt wurde.

Wahrscheinlich stolpert der Android-Browser über den falschen Codec während der "große" Browser das ausbügeln kann. Sie können z.B. Audacity oder den Online-Dienst CloudConvert nutzen, um die Dateien in "richtige" mp3-Dateien zu konvertieren.

by s165850 (115 points)
Danke. Ich werde die Dateien in .mp3 exportieren und hochladen. Wird das ein Problem verursachen, wenn jemand die Umfrage in der Zeit ausfüllt?
by SoSci Survey (302k points)
Nein, das sollte unproblematisch sein. Sie müssen nur beim Hochladen angeben, dass eine ggf. vorhandene Datei überschrieben werden soll.
by s165850 (115 points)
Thank you! Converting the files by exporting them in .mp3 with Audacity did not work - but the convertion with the CloudConvert did it.

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