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  1. Qt
  2. QTBUG-118099

Volume Discrepancies Between QMediaPlayer and QSoundEffect with ffmpeg

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    • Linux/Yocto
    • c2f4dae91 (dev), d4a863bc8 (6.7), a6d342e9f (6.6), dd24fbf13 (tqtc/lts-6.5), f0016c476 (dev), 5d1c4ae28 (dev), 38a03a85a (6.7), 7e1be5c5d (6.7), 7df82f7bc (6.6), 033f7002a (6.6), 430316b49 (tqtc/lts-6.5), b83c5f590 (tqtc/lts-6.5)
    • G&UI Finishing 2023

    Description

      Audio clips seem to have a slightly lower volume when played through the QMediaPlayer than when played through the QSoundEffect class (1~2 dB difference, depending on the sound effect).

      The differences in system gain applied on the audio signals: When using the QMediaPlayer, ~x1.8 gain is applied, whereas with QSoundEffect, ~x2.6 gain is applied.

      The issue is happening when using the ffmpeg backend.

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          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-130668 QSoundEffect::setSource does not change audio source

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              artemiy Artem Dyomin
              tuomas.vaarala Tuomas Vaarala
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              Dates

                Created:
                Updated:
                Resolved: