(2017-05-24 14:06)fsman1967 Wrote:
(2017-05-24 13:38)popcornmix Wrote:
(2017-05-24 11:48)fsman1967 Wrote: How is H265 performing now?
What formats seem to be working? e.g. 8bit 1080p @ 25, 30, 50, 60 fps?
I'm finding all my movies/tvshows at 8-bit 1080p24 play fine without overclock and with fairly low arm cpu.
25 and 30fps are much less common. I'd imagine no problems with 25, but 30 may require overclocking.
We will never do 1080p at 50 or 60fps without dedicated hardware.
My 720p50 samples do play fine.
Good to konw.
I would have thought that only at 1080p and above would h265 really make a big difference in verse h264.
I think I read that 720p not much difference of 264 vs 265.
Great work btw. I am actually thinking o f replacing my Rpi2 for a Rpi3 just on the basis of your work on h665
To back up what Popcornmix has said, I am using test files generated using HandBrake.
I use a 4K original that I re sample down to lower resolutions, it has a lot of movement and high detail.
At 1280x720 (720p) @ 31Hz full screen plays perfectly at almost any quality setting, Handbrake recommend using 20 to 18 quality, (for some reason the lower the number the higher the quality) I've generated files using 12 quality which still play perfectly, which is a 125MB file for a 2 minute clip. This is true for both a Pi2 and a Pi3.
For 1920x1080 (1080p) HandBrake recommends a quality factor of 23 to 20, again lower is higher quality.
The 1920x1080 @ 31Hz full screen will also play perfectly on both a Pi2 and Pi3 but using slightly less quality than the 1280x720 sample.
On a Pi2 I can get to a quality factor of 24, I use 25 to compress my videos anyway, so that works just great. File size for this is 46MB for a 2 minute clip.
On a Pi3 I can get down to a quality factor of 15, so way better than HandBrake recommends. File size for this is 156MB for the same 2 minute clip.
So if you don't want or need perfect quality, a Pi2 will actually do the job.
Both my Pis are slightly over clocked and have a good heat sink, no fan.
Hope this helps.