https://bugs.kde.org/show_bug.cgi?id=414572
Bug ID: 414572
Summary: video stutter in fullscreen mode / slideshow
Product: digikam
Version: 6.4.0
Platform: MS Windows
OS: MS Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: digikam-bugs-n...@kde.org
Reporter: ismir.schlech...@gmx.de
Target Milestone: ---
Video replay stutters, when shown in slide show. This stutter is _not_ present
in preview (double click on thumbnail in catalogue view).
STEPS TO REPRODUCE
1. observed on .mov and mp4 files (Canon generated, don't know the exact codec
spec)
2. screen resolution 3840x2160, 60 Hz refresh rate
3. found on two different machines (Ryzen 2700X/Radeon RX560 & AMD 7850K/Nvidia
GTX1060
4. has been observed from Digikam 6.0 to 6.4 in every release
OBSERVED RESULT
I observe stutter of video, when it is played within a slideshow. When the same
video plays in preview (after double click on thumbnail in catalogue), no
stutter can be noticed. It looks as if the video frame rate is too slow
compared to audio. The stutter then is caused by the video suddenly being sped
up by synchronization to audio (about every half second).
EXPECTED RESULT
no stutter of video in slideshow
SOFTWARE/OS VERSIONS
Windows: Windows 10, 1903 and 1909
ADDITIONAL INFORMATION
exemplary driver data of one machine
Radeon Softwareversion - 19.10.16
Radeon Software Edition - Adrenalin
Grafik-Chipsatz - Radeon RX 560 Series
Speichergröße - 4096 MB
Speichertyp - GDDR5
Systemtaktrate - 1300 MHz
Windows-Version - Windows 10 (64 bit)
Systemspeicher - 32 GB
CPU-Typ - AMD Ryzen 7 2700X Eight-Core Processor
Version der Radeon Einstellungen - 2018.0303.2240.40774
Treiber-Paketversion - 19.10.16-190514a-343170C-Channel
Anbieter - Advanced Micro Devices, Inc.
2D-Treiberversion - 8.1.1.1634
Direct3D® Version - 9.14.10.01394
OpenGL® Version - 26.20.11000.13558
OpenCL™ Version - 10.0.2841.5
AMD Mantle-Version - 9.1.10.0313
AMD Mantle API-Version - 102400
AMD Audio-Treiberversion - 10.0.1.10
Vulkan™ Driver Version - 2.0.87
Vulkan™ API Version - 1.1.106
Grafikkarten-Hersteller - Powered by AMD
Grafik-Chipsatz - Radeon RX 560 Series
Geräte-ID - 67FF
Anbieter-ID - 1002
Subsystem-ID - E348
Subsystem-Anbieter-ID - 1DA2
Revisions-ID - CF
Bustyp - PCI Express 3.0
Aktuelle Buseinstellungen - PCI Express 3.0 x8
BIOS-Version - 015.050.002.001
BIOS-Teilenummer - 113-13483HM-U01
BIOS-Datum - 2017/07/28 02:17
Speichergröße - 4096 MB
Speichertyp - GDDR5
Speichertaktfrequenz - 1750 MHz
Systemtaktrate - 1300 MHz
Gesamte Speicherbandbreite - 112 GByte/s
Speicherbitrate - 7.00 Gbps
2D-Treiberpfad -
/REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/Class/{4d36e968-e325-11ce-bfc1-08002be10318}/0000
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