https://bugs.kde.org/show_bug.cgi?id=382582
--- Comment #54 from caulier.gil...@gmail.com --- Hi, I perform some test with 8.0.0 to play MKV 4K on my computer (Kubuntu 22.04, ffmpeg 4, i7, 32Gb, NVIDIA). If QtAV is compiled without sound support (libopenal, libportaudio, libpulseaudio), the video decoding is fluent but of course there is no audio. Almost the video stream decoding pass through the video card. If i install libopenal: catastrophe !!! sound mangle CPU, video is cluttered => not suitable. Sound like libopenal interface in QtAV code is weird. I propose to disable this support in code. If i use libpulseaudio,, it's not better. CPU is not overloaded to decode sound, but in fact the audio is destroyed. If i use libportaudio, it's really better. CPU idle is 60%. video and audio are fluent It's not the best but suitable. NOTES: - there is no way to select right audio output on the computer. I installed right backend, uninstalled the unwanted, and recompiled digiKam as well. - If i install all backends, libopenal is always taken by default. - We must stay with libportaudio as i can see, or implement an audio backend selector. Gilles -- You are receiving this mail because: You are watching all bug changes.
