CoreCodec/H.264 Codec "CoreAVC"

[Ice =A=]

My humble opinion on DivX7:
If DivX just promotes the "old" x264 codec and the "old" matroska container (as they said they will) and if they manage to get that standard to stand allone players all over the world (as they did with MPEG4 asp), that would be great!!!
Of course if they should start to "reinvent" mpeg4 avc that would be daft...


And concerning CoreAVC:
Till it's proven otherwise CoreAVC still is the fastest AVC-decoder using only the cpu.
And since it can run most 720p content on those popular Atom-Netbooks CoreAVC was never as important as today!

[LeMoi]

When switching from a segment to another in a multi-segment file, video disappears... (works fine with FFDShow)

[toytown]

@Toytown
Then seeing how you posted in the NVIDIA Encoding thread you would not say the same thing about x264 as well?

No because the encoding is no where near IMO the same levels of quality.

If of course i could use a GPU accelerated encoder to give me exactly the same quality/same bitrate as x264 but 2-10times faster, then yes for me x264 would be irrelevant, as i would no longer use it.....of course this assuming that x264 wouldn't offload work to the GPU in future.

For decoding the performance doesnt matter as much (at least for me), if the competitors products can show the same files without any frame drops, why would i purchase coreAVC instead of using the free product?

[BetaBoy]

Originally Posted by toytown

why would i purchase CoreAVC instead of using the free product?

That's a great point in that for your needs it may not be required, but for others as noted with it maybe just what they need.

As far as GPU encoding.... there are already a few in the works for CUDA and (1) I know of that's out now (but I did not test it yet). So trends to hardware will surely offset and enhance software products... but will never replace it (at least in the short term).

[LoRd_MuldeR]

Originally Posted by toytown

why would i purchase coreAVC instead of using the free product?

Because CoreAVC works nicely with DVBViewer, which currently is my only option to watch HDTV

I can't get ffdshow to work with DVBViewer for HD channels (H.264) for some reason. It just gives "black screen", no error message or anything...

[leeperry]

thanks for allowing me as a beta tester, goddamn this thing is fast!

basically 4 times faster than ffdshow-MT on HD content from my initial tests, will run more benchmarks tomorrow

[tal.aloni]

BetaBoy,
let's say you're using Windows XP and got two GPUs connected, the primary supports Nvidia PureVideoHD, the secondary does not.
would it be possible to use the CUDA engine with CoreAVC while playing video on the secondary monitor?
(I would like to test it if you're not sure, as I happen to have such setup)

Tal

[LoRd_MuldeR]

Originally Posted by leeperry

basically 4 times faster than ffdshow-MT on HD content from my initial tests, will run more benchmarks tomorrow

My tests showed that it's faster than ffdshow-MT indeed. But not that much!

E:\HD\premiere-paff.ts

[ffdshow, rev2527, Pre-Beta 6, 2008-12-19, 4 threads]
User: 3s, kernel: 0s, total: 3s, real: 13s, fps: 317.1, dfps: 87.7
User: 3s, kernel: 0s, total: 3s, real: 13s, fps: 353.8, dfps: 87.3
User: 3s, kernel: 0s, total: 3s, real: 13s, fps: 321.1, dfps: 87.0

[ffdshow-MT, rev2525, 2008-12-20, 4 threads]
User: 2s, kernel: 0s, total: 2s, real: 9s, fps: 457.6, dfps: 130.2
User: 2s, kernel: 0s, total: 2s, real: 9s, fps: 446.9, dfps: 130.0
User: 2s, kernel: 0s, total: 2s, real: 9s, fps: 404.3, dfps: 129.3

[CoreAVC Decoder, v1.8.5]
User: 1s, kernel: 0s, total: 1s, real: 7s, fps: 1032.6, dfps: 160.2
User: 1s, kernel: 0s, total: 1s, real: 7s, fps: 899.0, dfps: 159.2
User: 1s, kernel: 0s, total: 1s, real: 7s, fps: 1091.7, dfps: 158.9

That's a speed-up of 22,5 % compared to ffdshow-MT

[leeperry]

Originally Posted by LoRd_MuldeR

That's a speed-up of 22,5 % compared to ffdshow-MT

fastandfurious-tlr1_h720p.mov

latest ffdshow MT :
User: 41s, kernel: 0s, total: 42s, real: 60s, fps: 73.4, dfps: 51.1

CoreAVC CUDA :
User: 10s, kernel: 0s, total: 11s, real: 17s, fps: 271.5, dfps: 177.6

that's with a 3.3Ghz Q6600 & a 96 shaders G92 on XP SP3

but I'm getting blockiness on seeks, and sometimes on movies too, hell I even got a nv4_disp infinite loop...I use the 180.48 drivers.

I will update to 180.100

[LoRd_MuldeR]

Originally Posted by leeperry

fastandfurious-tlr1_h720p.mov

latest ffdshow MT :
User: 41s, kernel: 0s, total: 42s, real: 60s, fps: 73.4, dfps: 51.1

CoreAVC CUDA :
User: 10s, kernel: 0s, total: 11s, real: 17s, fps: 271.5, dfps: 177.6

Since when does CoreAVC have GPU support ???

The official site still says:

GPU support (to be added**)

** GPU scheduled to be added at a later date

[ChronoCross]

@LoRd_MuldeR

Originally Posted by LoRd_MuldeR

Since when does CoreAVC have GPU support ???

The official site still says:

Originally Posted by leeperry

thanks for allowing me as a beta tester, goddamn this thing is fast!

basically 4 times faster than ffdshow-MT on HD content from my initial tests, will run more benchmarks tomorrow

He's a Cuda Beta tester for coreavc

[LoRd_MuldeR]

Originally Posted by ChronoCross

He's a Cuda Beta tester for coreavc

I see. But in that case it's not surprising that the GPU-enabled decoder (CoreAVC GPU) is faster than the pure software decoder (ffdshow-MT).

[ChronoCross]

Originally Posted by LoRd_MuldeR

I see. But in that case it's not surprising that the GPU-enabled decoder (CoreAVC GPU) is faster than the pure software decoder (ffdshow-MT).

Agreed. I suppose the only thing we can take out of this is that CoreAVC is now both the best CPU and GPU decoder solution for H264.

[nurbs]

There's the best thing again. I think the decoder in mpc-hc is better because it works on my ATI card.

[LoRd_MuldeR]

Originally Posted by ChronoCross

Agreed. I suppose the only thing we can take out of this is that CoreAVC is now both the best CPU and GPU decoder solution for H264.

The best? Maybe it's the fastest - given that you have a Nvidia card. But faster doesn't necessarily mean better!

Aas long as ffdshow-MT allows smooth "real time" playback, it is as good as any faster decoder for almost any purpose...

[leeperry]

Originally Posted by nurbs

There's the best thing again. I think the decoder in mpc-hc is better because it works on my ATI card.

except that it doesn't allow ffdshow postprocessing, and neither does it support >L4.1 encodes I think ? never bothered w/ DXVA myself, where's the fun in that

[nurbs]

All my encodes are level 3.1 and I don't do ffdshow postprocessing. If I wanted to do any of that I'd just use ffdshow-mt for decoding. Don't get me wrong, it's fine if it works for you. My problem was with CronoChross calling it the best GPU decoder while it's completely useless for anyone who doesn't have a nvidia card.

[leeperry]

Originally Posted by nurbs

it's completely useless for anyone who doesn't have a nvidia card.

who's to blame ? ATi is catching up on the HW side, but their drivers support still lags behind IMVHO.

indeed if you don't care for ffdshow/avisynth PP & don't have >L4.1 encodes....MPC HC DXVA ftw

[lexor]

Hey guys, does anyone have both CoreAVC and Asus Eee PC? I know there are 3 versions of that pc now, can the fastest of them do x264: Unrestricted 2 Pass Insane from MeGUI at 720p and ~5mbps? I'm thinking it's a big fat "no", but I so want it to be "yes".

[ChronoCross]

Originally Posted by nurbs

All my encodes are level 3.1 and I don't do ffdshow postprocessing. If I wanted to do any of that I'd just use ffdshow-mt for decoding. Don't get me wrong, it's fine if it works for you. My problem was with CronoChross calling it the best GPU decoder while it's completely useless for anyone who doesn't have a nvidia card.

We've already established that DXVA is a pile of garbage that is being abandoned by both ATI and Nvida in favor of their own proprietary systems. Right now CoreAVC's CUDA implementation matters to 31% of graphics card holders so that's a pretty significantly higher market share than AMD/ATI's 20%

MPC-HC's limitations make it hard to compare the two in terms of performance but if it works for you on the content your watching then great!