SUMMARY As described in Bug 418079. K3b creates silent wav files out of 96k 24bit flac files, that had been created by libFLAC 1.2.1 (UTC 2007-09-17) This is what mediainfo says... ___ File 1 ___ General Complete name : .../torrents/Lynyrd Skynyrd - 24 Bit Vinyl Pack/.../1 - Sweet Home Alabama.flac Format : FLAC Format/Info : Free Lossless Audio Codec File size : 100 MiB Duration : 4 min 39 s Overall bit rate mode : Variable Overall bit rate : 3 009 kb/s ... Audio Format : FLAC Format/Info : Free Lossless Audio Codec Duration : 4 min 39 s Bit rate mode : Variable Bit rate : 3 009 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 96.0 kHz Bit depth : 24 bits Compression mode : Lossless Stream size : 100 MiB (100%) Writing library : libFLAC 1.2.1 (UTC 2007-09-17) ___ File 2 ___ General Complete name : .../30_and_33-long.flac Format : FLAC Format/Info : Free Lossless Audio Codec File size : 3.26 MiB Duration : 30 s 0 ms Overall bit rate mode : Variable Overall bit rate : 912 kb/s ... Audio Format : FLAC Format/Info : Free Lossless Audio Codec Duration : 30 s 0 ms Bit rate mode : Variable Bit rate : 910 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 96.0 kHz Bit depth : 24 bits Compression mode : Lossless Stream size : 3.25 MiB (100%) Writing library : libFLAC 1.2.1 (UTC 2007-09-17) I don't know how to cut a piece of the first file without re-encoding it, so as to attach it here. I will try to attach the second file. Note: When I imported the first file in Audacity, ... and then exported it as flac, ... and then used k3b to create an Audio CD with the new flac file ... and then chose to export the sound of that CD the created wav file had sound. This "successful" flac file that was created by Audacity was like this, according to mediainfo... Complete name : .../004_1 - Sweet Home Alabama_24bit_8compression_whole.flac Format : FLAC Format/Info : Free Lossless Audio Codec File size : 100 MiB Duration : 4 min 39 s Overall bit rate mode : Variable Overall bit rate : 3 009 kb/s ... Audio Format : FLAC Format/Info : Free Lossless Audio Codec Duration : 4 min 39 s Bit rate mode : Variable Bit rate : 3 009 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 96.0 kHz Bit depth : 24 bits Compression mode : Lossless Stream size : 100 MiB (100%) Writing library : libFLAC 1.3.2 (UTC 2017-01-01) So, the issue might have to do with the fact that the initial flac files were encoded with "libFLAC 1.2.1 (UTC 2007-09-17)". STEPS TO REPRODUCE 1. See bug 418079 --> STEPS TO REPRODUCE --> Version 1 OBSERVED RESULT Again, see bug 418079 --> OBSERVED RESULT --> In version 1 EXPECTED RESULT Sound in the files, or a warning of no sound in the files. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Mageia 7 64bit KDE Plasma Version: KDE Frameworks Version: KDE Frameworks 5.57.0 Qt Version: Qt 5.12.6 (built against 5.12.2) ADDITIONAL INFORMATION
Created attachment 126385 [details] "___ File 2 ___ " as described in the bug Attention! This file is a silent file. But if you open it in Audacity, you will see a graph.
I see now. that the wav file, that gets created by k3b, out of "___ File 2 ___" flac, is too large to attach here. For this thing to make sense, you probably have to use the attached "___ File 2 ___" flac file, and try to make an Audio CD with k3b (export the sound only, no need to actually burn the CD ). Then you need to open the new wav file, in Audacity, as well as open the initial "___ File 2 ___" flac file in Audacity. Comparing the two, you should see that the initial graph has disappeared. But then again, this might be a result of the different "Sampling rates" between the two files, and this example might mean absolutely nothing. Sorry... but that is what I could find. ... Why is the flac file silent? See... https://people.xiph.org/~xiphmont/demo/neil-young.html --> Intermod Tests Alternatively, someone could try downloading the "___ File 1 ___" flac file.
Please provide a non silent file, i can't rule out there's some magic optimization somewhere saying "this is silent anyway"
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!