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raspberrypi / firmware

This repository contains pre-compiled binaries of the current Raspberry Pi kernel and modules, userspace libraries, and bootloader/GPU firmware.
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h264 decoder and display problems on the pi4 #1276

Open zoff99 opened 4 years ago

zoff99 commented 4 years ago

we are using h264_mmal (via ffmpeg) to decode an incoming live stream and then displaying it with OMX (VC OpenMAX interface).

this works without any problems on the Pi3B+ with the latest firmware and kernel.

but on the Pi4 we get video curruption periodically. even when using the exact same binary of our software.

since no errors do show up, we don't even know where to start looking? can you help us?

zoff99 commented 4 years ago

pi3b+:

Aug 15 2019 12:08:48 Copyright (c) 2012 Broadcom version 0e6daa5106dd4164474616408e0dc24f997ffcf3 (clean) (release) (start_x)

Linux rpi-B52B5 4.19.66-v7+ #1253 SMP Thu Aug 15 11:49:46 BST 2019 armv7l GNU/Linux

zoff99 commented 4 years ago

pi4:

Sep 24 2019 17:36:31 Copyright (c) 2012 Broadcom version cd3add54955f8fa065b414d8fc07c525e7ddffc8 (clean) (release) (start_x)

Linux rpi-8190D 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l GNU/Linux

popcornmix commented 4 years ago

Can you swap sdcards and confirm if the problem swaps? e.g. is the problem in Pi3 vs Pi4 or the problem in the sdcard (e.g. firmware, kernel, or userland code)

zoff99 commented 4 years ago

no i cant, the pi4 needs a different raspian to work

zoff99 commented 4 years ago

how can i view hw decoding errors or debug messages on the pi4? how can i vew OXM errors on the pi4?

popcornmix commented 4 years ago

You can run the pi4 sdcard on the Pi3.

The firmware you have on Pi3 should be new enough to boot on a Pi4. 3d won't work on a Pi4 (assuming Pi3 is on stretch and Pi4 is on buster) but you can boot to console, or boot without fkms (comment out dtoverlay=vc4-fkms-v3d).