Hi! I have been trying to reproduce videos on a Raspberry Pi 4 64 bits with:
- VLC - Qt 5 Multimedia - Qt 6 Multimedia But in all cases I am facing issues and/or decoding via CPU instead of using the GPU. Let me summarize my findings and hopefully you can guide me to a solution. In all cases I'm using Weston. ## VLC Currently VLC defaults to `rpidistro-vlc` which, I understand, it's a heavily patched VLC fork, and many patches are for using the GPU. I've tried building VLC but then found out that it requires an older taglib, failing to build from source. So I went ahead and forced an older taglib (1.12, perhaps too much) which allowed me to at least build VLC. I noticed however that rpidistro-vlc is currently being built without Qt, so I am using cvlc. When I run cvlc I get: ``` rpi4:~$ cvlc big-buck-bunny-1080-60fps.mp4 [00000055b96bd120] main interface error: no suitable interface module [00000055b968f410] main libvlc error: interface "globalhotkeys,none" initialization failed [00000055b96bd120] dummy interface: using the dummy interface module... [0000007f740013f0] gles2 vout display error: parent window not available [0000007f740013f0] gl vout display error: parent window not available [0000007f740013f0] fb vout display error: cannot get terminal mode (Inappropriate ioctl for device) [0000007f94114d20] main video output error: video output creation failed [0000007f9cd826d0] main decoder error: failed to create video output [h264 @ 0x7f9cd92c30] get_buffer() failed [h264 @ 0x7f9cd92c30] thread_get_buffer() failed [h264 @ 0x7f9cd92c30] decode_slice_header error [h264 @ 0x7f9cd92c30] no frame! [0000007f780013f0] gles2 vout display error: parent window not available [0000007f780013f0] gl vout display error: parent window not available [0000007f780013f0] fb vout display error: cannot get terminal mode (Inappropriate ioctl for device) [0000007f74045e20] main video output error: video output creation failed [0000007f9cd826d0] main decoder error: failed to create video output [h264 @ 0x7f9cdae890] get_buffer() failed [h264 @ 0x7f9cdae890] thread_get_buffer() failed [h264 @ 0x7f9cdae890] decode_slice_header error [h264 @ 0x7f9cdae890] no frame! ... ``` I noticed that RPi OS is shipping a newer version, so I took the time to build it, but got the same result. I did try to build it with Qt 5, but failed (I might need to apply extra patches...?) ## Using Qt 5 Any video example in Qt Multimedia is simply using the CPU to render, and goes REALLY slow. ## Using Qt 6 This is clearly still using the CPU but it's a little bit smoother than Qt 5. ## Extra questions Maybe I need to go with 32 bits and use the userland video driver? Something else? Any feedback here will be highgly appreciated. Thanks in advance, Lisandro. -- Lisandro Pérez Meyer Embedded Platform Engineer
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#63934): https://lists.yoctoproject.org/g/yocto/message/63934 Mute This Topic: https://lists.yoctoproject.org/mt/108808388/21656 Group Owner: yocto+ow...@lists.yoctoproject.org Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
