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by dom
Sun Jul 30, 2017 3:40 pm
Forum: Graphics, sound and multimedia
Topic: omxplayer file formats
Replies: 15
Views: 16872

Re: omxplayer file formats

gkreidl wrote:
Sat Jul 29, 2017 5:49 am
Did you enable the (experimental) GL driver? It's not compatible with omxplayer (or anything else using the GPU).
Setting gpu_mem=16 would be another way of stopping omxplayer working in this way.
by dom
Sun Jul 30, 2017 3:39 pm
Forum: Advanced users
Topic: Extra 16M memory on Pi2/Pi3
Replies: 32
Views: 18758

Re: Extra 16M memory on Pi2/Pi3

why is that parameter not documented in HELP | DOCUMENTATION | CONFIGURATION | config.txt | Memory ? Some options are only used for testing and are not recommended for users outside of a specific testing thread (like this one). I'd prefer not to put these test options into the official documentatio...
by dom
Sun Jul 30, 2017 3:32 pm
Forum: Advanced users
Topic: Extra 16M memory on Pi2/Pi3
Replies: 32
Views: 18758

Re: Extra 16M memory on Pi2/Pi3

cjan wrote:
Sat Jul 29, 2017 2:31 am
so, no need total_mem=1024 in config.txt ?
If you are running latest rpi-update firmware then no need for total_mem=1024 in config.txt. The extra 16M will be available.
by dom
Tue Jul 25, 2017 3:28 pm
Forum: C/C++
Topic: VPU - Playing Video - Formats
Replies: 14
Views: 1774

Re: VPU - Playing Video - Formats

kevcal wrote:
Mon Jul 24, 2017 12:32 pm
Command was

Code: Select all

ffmpeg -i SVmp4_720x480_10mb.mp4 -c:v libx264 -profile:v main -level:v 4.1 out.h264
Anything obvious wrong with this file?
Any reason why you are not using the "-bsf h264_mp4toannexb" option suggested?
by dom
Mon Jul 24, 2017 10:52 am
Forum: General discussion
Topic: WANTED: Wifi testers!
Replies: 12
Views: 1431

Re: WANTED: Wifi testers!

Latest rpi-update kernel now includes the BCDC priority patch.
by dom
Fri Jul 21, 2017 4:16 pm
Forum: General discussion
Topic: WANTED: Wifi testers!
Replies: 12
Views: 1431

Re: WANTED: Wifi testers!

To save rebuilding the kernel I've put instructions here to get a prebuilt module for testing.
by dom
Sun Jul 16, 2017 1:59 pm
Forum: Troubleshooting
Topic: Low voltage with TV Tunner
Replies: 5
Views: 570

Re: Low voltage with TV Tunner

I have measured the output exactly at the adapter end, it's 5.12V when leaving. I remember i bought it especially for the RPI 3, but i never saw it draw more than 1A, is there a lightning bolt icon for the amps ? Is the lightning bolt strictly related to voltage? You need to measure on the Pi when ...
by dom
Fri Jul 14, 2017 3:01 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 185
Views: 291651

Re: Under-voltage warnings

If the power drops below the voltage threshold are brief (e.g. a few milliseconds) then you won't spot it on the LED.
But get_throttled has some persistence (matching the visible warning symbol) so it will show any undervoltage events that occurred recently (~ 1 second).
by dom
Tue Jul 11, 2017 3:23 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 185
Views: 291651

Re: Under-voltage warnings

Is the PWR LED lit up when you run this?
Have you got any custom configuration that alters the PWR LED state?
by dom
Fri Jul 07, 2017 9:03 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 185
Views: 291651

Re: Under-voltage warnings

You can use

Code: Select all

vcgencmd get_throttled
See: viewtopic.php?f=63&t=147781&start=50#p972790
by dom
Thu Jun 29, 2017 10:53 am
Forum: Troubleshooting
Topic: New firmware works bad when virtual framebuffer height >2400
Replies: 8
Views: 950

Re: New firmware works bad when virtual framebuffer height >

pik33 wrote:First test result: the new version seems to work OK; the physical screen is still 1920x1200 while the desired virtual screen was 2496
Thanks - this fix will be in future firmware updates.
by dom
Wed Jun 28, 2017 6:22 pm
Forum: Troubleshooting
Topic: New firmware works bad when virtual framebuffer height >2400
Replies: 8
Views: 950

Re: New firmware works bad when virtual framebuffer height >

The seting max_framebuffer_height helped. What was not expected: when the virtual height was set to 2401, the physical height was set to 2400 instead of desired 1200. Expected: set the virtual height to 2400 and don't touch physical height I've had a closer look and I have seen something suspicious...
by dom
Wed Jun 28, 2017 12:33 pm
Forum: Troubleshooting
Topic: New firmware works bad when virtual framebuffer height >2400
Replies: 8
Views: 950

Re: New firmware works bad when virtual framebuffer height >

That is expected behaviour. We consider the 1920x1200 the maximum supported framebuffer resolution. We allow up to double the maximum supported dimensions for a virtual framebuffer (e.g. 3840x2400). But you can change these limits. Try setting, e.g. max_framebuffer_height=1600 and you should be able...
by dom
Mon Jun 19, 2017 11:09 am
Forum: Troubleshooting
Topic: Pi 3 - how to detect low voltage?
Replies: 3
Views: 992

Re: Pi 3 - how to detect low voltage?

by dom
Wed Jun 07, 2017 1:20 pm
Forum: Troubleshooting
Topic: After upgrade I have problem with 2560x1440x60hz resolution
Replies: 5
Views: 1119

Re: After upgrade I have problem with 2560x1440x60hz resolut

@raspberrybeginner Running "sudo vcdbg log msg" provides a clue: 000694.556: hdmi: HDMI:EDID filtering out DMT format: 2560x1600p @ 60 Hz (87) with pixel clock 348 MHz and hfp:192 hs:280 hbp:472 The very high resolution requires an overclock of pixel frequency. Try adding (without the comment "#") h...
by dom
Sat Jun 03, 2017 11:34 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 289
Views: 96756

Re: Moving Linux kernel to 4.9

D'oh, me again, now I'm having the same problem on my Pi3. The problem is I did a apt-get update/dist-upgrade and it downgraded the kernel. Then rpi-update still thinks it's updated to 4.9 (which I guess it's not) so rpi-update isn't allowing it reinstall: Run: sudo rm /boot/.firmware_revision befo...
by dom
Fri Jun 02, 2017 6:29 pm
Forum: Beginners
Topic: KODI? OpenElec? Raspbian? etc. etc.
Replies: 3
Views: 3123

Re: KODI? OpenElec? Raspbian? etc. etc.

Kodi is the mediaplayer application. Raspbian, LibreELEC, OpenELEC, OSMC are distributions (i.e. a complete OS). All can run kodi, with the latter 3 being specifically designed for running kodi. If you just want to run kodi then use a dedicated distribution - everything is optimised to run out of th...
by dom
Tue May 30, 2017 4:49 pm
Forum: Troubleshooting
Topic: Problem with rpi-update
Replies: 3
Views: 788

Re: Problem with rpi-update

Should be resolved now (without requiring gawk to be installed).
See: https://github.com/Hexxeh/rpi-update/issues/244
by dom
Tue May 30, 2017 4:42 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 289
Views: 96756

Re: Moving Linux kernel to 4.9

See: https://github.com/Hexxeh/rpi-update/issues/244 for info about gawk/mawk. I will remove the gawk specific code in rpi-update once I've confirmed it fixes the issue. I've also asked our packaging guy why many users have mawk rather than gawk installed (I personally have gawk installed, but I gue...
by dom
Thu May 25, 2017 10:16 am
Forum: Beginners
Topic: Is overclocking safe ?
Replies: 16
Views: 3463

Re: Is overclocking safe ?

pi_lover wrote: Application launch time is the same.
Application launch time will significantly affected by sdcard speed.
There is a long thread here.

You want to have high random access 4K read and writes for good performance on a Pi.
by dom
Wed May 24, 2017 2:37 pm
Forum: Beginners
Topic: Is overclocking safe ?
Replies: 16
Views: 3463

Re: Is overclocking safe ?

(theoretically it will reduce the lifespan of the processor, but if the lifespan is predicted to be decades and you lose a year from that would you care?)
by dom
Wed May 24, 2017 2:34 pm
Forum: Beginners
Topic: Is overclocking safe ?
Replies: 16
Views: 3463

Re: Is overclocking safe ?

After 5 years of allowing overclocking I haven't seen a single report of overclocking harming a Pi. So I'd say it is safe.

Of course too high an overclock may crash, and you could lose data due to the crash, so do your experiments after backing up sdcard, or using a clean install.
by dom
Wed May 17, 2017 3:20 pm
Forum: Advanced users
Topic: Raspberry Pi 3 Video decoding
Replies: 13
Views: 16947

Re: Raspberry Pi 3 Video decoding

mp42 is a hacked version of mpeg-4 that pre-dates the standard (see here).
We can't hardware decode these files.
This format is quite old, so typically on SD resolution so can be software decoded using something like Kodi.
by dom
Wed May 17, 2017 11:25 am
Forum: Advanced users
Topic: Raspberry Pi 3 Video decoding
Replies: 13
Views: 16947

Re: Raspberry Pi 3 Video decoding

cjan wrote:is there a way to decode Xvid (.avi) such as w32codecs?
In general xvid is just MPEG-4 and will play fine.
If you have a problem file then post mediainfo - there may be some configuration that isn't supported.

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