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by huww98
Fri Jun 21, 2019 3:50 pm
Forum: Graphics, sound and multimedia
Topic: gstreamer v4l2h264enc/v4l2src issue. Not working/Very large latency/Freeze after a while
Replies: 2
Views: 429

Re: gstreamer v4l2h264enc/v4l2src issue. Not working/Very large latency/Freeze after a while

Bcm2835-v4l2 (the camera v4l2 driver) does not support dmabufs. Currently it is using the vmalloc allocator, and those dmabufs would be incompatible with the codec anyway as it wants contiguous allocations. With a simple tweak it should be possible to support dmabuf import into bcm2835-v4l2, so if ...
by huww98
Thu Jun 20, 2019 5:41 am
Forum: Other
Topic: Tutorial: How to install Ubuntu 18.04 for ARM64 on Raspberry Pi 3B
Replies: 33
Views: 37952

Re: Tutorial: How to install Ubuntu 18.04 for ARM64 on Raspberry Pi 3B

I did manage to get one step further.. I do now have the grub loader where I can choose 'Install' . But my keyboard is not working.. I have read that others had this problem but what is the fix ?? Thanks in advance I've fixed this by borrow my friends keyboard, plug it to my screen, and plug the sc...
by huww98
Thu Jun 20, 2019 5:25 am
Forum: Graphics, sound and multimedia
Topic: gstreamer v4l2h264enc/v4l2src issue. Not working/Very large latency/Freeze after a while
Replies: 2
Views: 429

gstreamer v4l2h264enc/v4l2src issue. Not working/Very large latency/Freeze after a while

Hi, I'm building an application that can live stream from raspberry pi camera. Previously, I've managed to stream using this pipeline: raspivid -t 0 -w 1296 -h 972 -fps 30 -b 4000000 --flush -o - | ./gst-launch-1.0 -v \ rtpbin name=rtpbin \ fdsrc do-timestamp=true ! h264parse ! rtph264pay config-int...
by huww98
Thu Sep 06, 2018 2:16 pm
Forum: Other
Topic: Tutorial: How to install Ubuntu 18.04 for ARM64 on Raspberry Pi 3B
Replies: 33
Views: 37952

Re: Tutorial: How to install Ubuntu 18.04 for ARM64 on Raspberry Pi 3B

I have successfully get into GRUB, however I can't select Install, my keyboard is not recognized, I have no idea what goes wrong. I'm working with Raspberry Pi 3B. I have tried two keyboard. with the first one, U-boot reports "USB0: Scanning bus 0 for devices... cannot reset port 3!7" with the secon...

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