Raspberry Pi Forums

davorin

A 1000MB test file is on the way....100MB is way to short...and omxplayer won't play a file that is splitted in the middle (o;

Upload finished at the usual place on my webserver in around 17 minutes...James knows where

davorin

I'm using omxplayer...latest apt-get upgrade and rpi-update from yesterday... But I assume omxplayer is here the resource hog when feeding the GPU with the video streams... I will update the blog posts with more details then... Also I'm currently testing temperature plots versus different CPU speeds...

davorin

Some more performance comparison:

http://www.uclinux.net/blog.html

This time H.264 versus MPEG-2 1080p stream....

davorin

Well....using now a workaround (o;

Using cron with following entry and just do a "cat /home/pi/temp.txt" in the snmpd.conf exec definition

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*/1 * * * * /opt/vc/bin/vcgencmd measure_temp | /bin/egrep -o '[0-9][0-9]\.[0-9]' > /home/pi/temp.txt

davorin

Good morning For some testing I want to display Cacti graphs...especially for logging the temperature I have a small wrapper shell script which executes "/opt/vc/bin/vcgencmd measure_temp" But when I want to get the data via SNMP get it returns: .1.3.6.1.4.1.2021.8.1.1.1 = INTEGER: 1 .1.3....

davorin

Some test result of raw NFS performance of the RPi B (o;

http://www.uclinux.net/blog.html

More tests and results to follow

richard

davorin

Testing raw NFS performance now and collect stats via Cacti... Looks good...Cacti shows an average bandwidth of 85MBits/sec with 98MBits/sec peak ;-) CPU load is around 30 - 35% (cat file > /dev/null and kworker together)... Any news regarding VC-1 performance and why framerate without audio track i...

davorin

Hi James...

Test file uploaded to my own server...
The link is in your mailbox (o;

Uploading now same clip with ac3 audio enclosed...

thanx in advance
richard

davorin

Just ripped the dark night without any audio tracks...so only the VC-1... SNMP stats show me a streamrate of approx. 24MBits/sec and a CPU load of around 40 - 45%... The video doesn't hang anymore...but plays with a much lower framerate of around 8 - 12 frames/sec... root@raspberrypi:/mnt/Video/movi...

davorin

Hmm...looks like this problem... "The dark knight" I have with several audio streams: root@raspberrypi:/mnt/Video/movies/fantasy# omxplayer -i The.Dark.Knight.2008.1080p.m2ts file : The.Dark.Knight.2008.1080p.m2ts reult 5385 format mpegts audio streams 4 video streams 1 chapters 0 subtitle...

davorin

Oh sorry..meant CPU usage....

Though networking and USB disk should be around same as they both use USB...

davorin

Well if you ask the codec team anyway... (o;

How far is DTS/AC3 license model going?

thanx in advance
richard

davorin

What uses less resources for accessing a movie? Playing via NFS? Or playing via local USB harddrive? Or playing via SD card? But so far since the latest firmware update I'm really impressed by the performance...before it wasn't able to play back h.264 over 15MBits/sec (o; I still haven't put my popc...

davorin

I have both licenses...VC-1 and MPEG-2 (o;

Without VC-1 license it won't even play at all (o;

Interestingly Planet Earth, which is also VC-1, plays nicely...no stuttering on the episode 1 with the thousands of birds flying on the screen...peak stream rate around 40 - 50MBit/sec

davorin

Just wanted to raise a quick question what other people get out of their RPi regarding performance of h.264 vs. VC-1... For me it plays smoothly a BluRay RIP of SPiderman 3 via NFS without stuttering (and software AC-3 decoding), whereas a BluRay RIP of The dark knight hangs every few seconds (VC-1 ...

davorin

Good morning...

When I set in config.txt the lines:

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arm_freq=1000
core_freq=500
sdram_freq=500
over_voltage=6

I always see with "cat /proc/cpuinfo":

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Processor	: ARMv6-compatible processor rev 7 (v6l)
BogoMIPS	: 697.95

Does the Arm CPU has some sort of dynamic clock adjustment?

davorin

Important question for developers Rpi. DTS/AC3 hardware decoding is possible in Rpi??. Yes it is. All ready to go for omxplayer and xbmc. Unfortunately DTS requires compliance testing before we can licence it. We're investigating that. Hmm...All ready to go on omxplayer and xbmc means they would su...

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Re: h.264 vs. vc-1 performance

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snmpd.conf exec -> VCHI initialization failed

Re: h.264 vs. vc-1 performance

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arm_freq ignored? (solved)

Re: Hardware DTS decoding