Raspberry Pi Forums

kilograham

there don't seem to be many; best i could find were 2 ports: https://www.amazon.com/gp/product/B07M5K9X7W

kilograham

RDPUser wrote: ↑
Mon Aug 05, 2019 9:44 am
Important: Cold boot attacks are only one attack vector. Ensure secure passwords.

"raspberry" is an insecure password; i suggest "yrrebpsar1"

kilograham

Cool, thanks; i'm looking at an existing codebase that uses GLX on X11, but EGL for wayland... debating whether there would be performance benefits in moving the X11 code to use EGL

kilograham

demouser@pi64 ~ $ wget -c http://jell.yfish.us/media/jellyfish-10-mbps-hd-h264.mkv demouser@pi64 ~ $ ffplay -vcodec h264_v4l2m2m -i jellyfish-10-mbps-hd-h264.mkv And it displays smoothly! Playing this file using s/w decoding is laggy and takes up all the cores, so the improvement is really marked. ...

kilograham

It should be passing through whatever timestamp is on the input (output queue in v4l2 parlance) to the output (capture queue). That does assume that framed data is being passed in - it makes no sense with unframed data. Thanks; yeah still need to do some work to root cause, this is a guess right no...

kilograham

I think that the problem may be the pi v4l2 device not filling in

Code: Select all

v4l2_buffer.timestamp

for the captured frame (in this case for h264 decode)

kilograham

Has anyone else tried To get ffmpeg working on 32bit raspbian with v4l2m2m This mentions success on 64 bit gentoo https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=234778&p=1436162&hilit=Gentoo+v4l2m2m#p1436511 I tried the same older base (ffmoeg 4.1.1 and applied patches to that, but I got th...

kilograham

Well I rebuilt latest ffmpeg from main git repo (with the 3 mentioned patches) on my Pi 4, with: ./configure --prefix=/usr --extra-version=1+rpt1 --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample ...

kilograham

Thanks, I assume you mean these https://www.raspberrypi.org/forums/viewtopic.php?t=234778#p1436166 I suspect I do need these as I was seeing no data for subsequent planes for YUV420P. I had hacked this on the caller side to no avail, but perhaps the other bits are the problem. Now to figure out the ...

kilograham

We have (at least with FKMS and mesa) GLX and EGL ... to the extent that we may be able to choose between them is there a preference, or a performance difference for the areas they overlap - is GLX built on top of EGL internally for Pi?

kilograham

I see that ffmpeg after recent raspberry pi update offers h264_v4l2m2m and hevc_v4l2m2m - I was pretty sure at least the latter was not yet functional. Should I expect either to work, should I build my own copy of libffmpeg (where is the latest canonical OpenELEC/Kodi version if so?) (I know they ha...

kilograham

you may also need food and water

kilograham

BespokeTech wrote: ↑
Sat Jul 13, 2019 3:21 pm
Now posted

https://www.raspberrypi.org/forums/view ... 5#p1499185

awesome; thank you

kilograham

I believe the bug causing the issue is this one.... https://bugs.launchpad.net/qemu/+bug/1805913 ooh; that sucks! With regards to getting around losing data from the docker container.... You can stop that by binding directories on your host to the docker container using the -v flag. More info here....

kilograham

Kilograham, Due to a bug, debootstrap doesn’t build a buster sysroot without using a 32bit host. You will get strange issues such as SSL problems like you are having. To fix the problem either use a 32bit host, or do what I do and that is to use docker in a 64bit environment but with an i386 image....

kilograham

I actually build my entire sysroot and resulting image using debootstrap and chroot (under x86_64 ubuntu with qemu-static userland). No Pi is involved in any of the build process other than to actually run what I am producing as the end product. The resulting image works really well on my Pi 3b+ an...

kilograham

As of Pi4, CLion (https://www.jetbrains.com/clion/) is actually pretty usable on the Pi! (at least with 4G). This is the IDE I use for C/C++/Rust etc. dev on Linux Desktop or on macOS.

kilograham

out of curiosity is your monitor powered from the same or different mains circuit?

Search found 18 matches

Re: Power station for PI4

Re: [Tutorial] Hardening/Securing RPi against cold boot attacks

Re: GLX vs EGL

Re: How to correctly set up v4l2 (m2m) under 64-bit kernel / 64-bit userland?

Re: FFMPEG/V4L2M2M status (+Kodi/OpenElec)

Re: FFMPEG/V4L2M2M status (+Kodi/OpenElec)

Re: FFMPEG/V4L2M2M status (+Kodi/OpenElec)

Re: FFMPEG/V4L2M2M status (+Kodi/OpenElec)

Re: FFMPEG/V4L2M2M status (+Kodi/OpenElec)

GLX vs EGL

FFMPEG/V4L2M2M status (+Kodi/OpenElec)

Re: Is it possible to survive only on raspberry pi 4b4?

Re: Anyone cross compiled QT for the Pi 4 yet.

Re: Anyone cross compiled QT for the Pi 4 yet.

Re: Anyone cross compiled QT for the Pi 4 yet.

Re: Anyone cross compiled QT for the Pi 4 yet.

Re: well, i pre-ordered a Rpi4B-4GB...

Re: Just received my RPi4b/4GB - no HDMI output!!!