2017-10-26, 20:41
(2017-10-26, 16:36)dantist Wrote: Limiting the bitrate to 5 MBit/s (5000000) should do the trick. I'm currently testing 6 MBit/s with an overclocked RPi 3 and get some stuttering from time to time.Thanks a lot for the hint, that was a good starting point!
I had to decrease the limit to 3 MBit/s to get good results with my testcase, when set to 4 MBit/s the actual max bitrate was still about 5.5-5.8 MBit/sec and I'd get stuttering and a/v delay.
(2017-10-26, 19:18)Milhouse Wrote: Try this overclock:
Code:arm_freq=1300
gpu_freq=500
over_voltage=4
sdram_freq=580
over_voltage_sdram=5
sdram_schmoo=0x02000020
It bumps the Pi3 ARM frequency by 100MHz, the GPU frequency by 200Mhz, and increases the SDRAM frequency by 130Mhz (580 is as high as I can go, but some can hit 600). This should help performance although it might increase temperatures a little so a heatsink or FLIRC case is recommended.
Thanks for the hint as well, I'll do some test with these settings!
BTW: Does gpu overclock have any benefit for netflix / SW decoding?
I've got an I2S soundcard installed on my RPis, so cooling options are somewhat limited (there's about 1.5-2cm of vertical space between RPi and soundcard) and unfortunately a FLIRC case is out of question. I'm using no case though which could help a bit. But I'd better be on the conservative side concerning overclocking, the tiny heatsinks I have here don't look like they can dissipate too much heat.
so long & again thanks for your help,
Hias