Bug 142127 - FILEOPEN PPTX No audio played from file trimmed in PP
Summary: FILEOPEN PPTX No audio played from file trimmed in PP
Status: NEW
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: Impress (show other bugs)
(earliest affected)
Inherited From OOo
Hardware: x86-64 (AMD64) All
: medium normal
Assignee: Not Assigned
URL: https://support.microsoft.com/en-us/o...
Depends on:
Blocks: PPTX
  Show dependency treegraph
Reported: 2021-05-06 11:38 UTC by Buovjaga
Modified: 2023-11-09 03:16 UTC (History)
4 users (show)

See Also:
Crash report or crash signature:

Simple reproducer example (365.68 KB, application/vnd.openxmlformats-officedocument.presentationml.presentation)
2021-05-10 13:36 UTC, NISZ LibreOffice Team
Trim feature in PP and the example file in Impress (97.52 KB, image/png)
2021-05-10 13:36 UTC, NISZ LibreOffice Team

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Description Buovjaga 2021-05-06 11:38:12 UTC
Open attachment 171688 [details] from bug 142125. Carmina Burana should be blasting from your speakers.

The audio format is AAC LC, file is .m4a.

Same on Windows and Linux.

This file was received from a Reddit user.

Arch Linux 64-bit
Version: / LibreOffice Community
Build ID: 1f3dddd6f21d91c429190ae314dadeec409f35f4
CPU threads: 8; OS: Linux 5.11; UI render: default; VCL: kf5 (cairo+xcb)
Locale: fi-FI (fi_FI.UTF-8); UI: en-US
Calc: threaded
Built on 5 May 2021
Comment 1 Julien Nabet 2021-05-06 16:07:40 UTC
On pc Debian x86-64 with master sources updated today, I could reproduce this.

I noticed this log:
warn:legacy.osl:19304:19304:slideshow/source/engine/animationnodes/animationaudionode.cxx:44: could not extract sound source URL/empty URL string
Comment 2 NISZ LibreOffice Team 2021-05-10 13:36:05 UTC
Created attachment 171826 [details]
Simple reproducer example

Let's turn this into something actionable...

The original file has an m4a sound file, which is difficult to play on Windows (see bug 62408), but here something else must be going on, considering the confirmation from Debian.

Turns out the original example uses a PP feature on the Carmina Burana clip, to shorten the played part.

When applying that Trim feature on a simple wav file that can be played even on Windows, Impress does not recognize the media file as one so does not play it at all.

Impress cannot trim multimedia files yet, but maybe we could transform this setting to effect duration setting.
Comment 3 NISZ LibreOffice Team 2021-05-10 13:36:46 UTC
Created attachment 171827 [details]
Trim feature in PP and the example file in Impress
Comment 4 QA Administrators 2023-11-09 03:16:15 UTC
Dear Buovjaga,

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