HomerHEVC 2.0 has been released

[Kurtnoise]

I did not find any reference to this encoder (http://homerhevc.com/) around here...So, here are the current features :


Multiplatform (Linux,Windows)
8 bit-depth
Intra and Baseline profile (I and P images with 1 reference image)
All intra prediction modes
2Nx2N and NxN inter prediction modes
All prediction sizes (64,32,16,8,4)
All transform sizes (32,16,8,4)
Half pixel and quarter pixel precission motion estimation.
Rate Control Modes: Fixed QP, CBR (Constant Bit Rate), and VBR (Variable Bit Rate)
Deblocking filter
SAO (Sample Adaptive Offset)
Wpp and Frame based parallelization for massive parallelism
Sign hiding bit enabled
Intra RDO
Intra-inter fast RD


https://github.com/jcasal-homer/HomerHEVC/releases

[birdie]

How does it fare against x265 performance and qualitywise?

[Tommy Carrot]

The encoding speed is pretty good for an h.265 encoder, the quality is not very good, but bear in mind that this is a work in progress project. It doesn't have basic features like b-frames implemented.

It's a good thing that there are at least 2 fairly actively developed open source hevc encoder out there other than x265, maybe one of them will focus on transparency/high quality performance, so we wont have to wait for x265 to have something better than x264 for that purpose.

[easyfab]

and there is also 2 others libde265 and kvazaar that seems to be active, but I don't know the quality and speed:

https://github.com/strukturag/libde265/commits/encoder
https://github.com/ultravideo/kvazaar

for HomerHEVC the encoder parameters seems to be a little complicated, it need some presets

[Tommy Carrot]

Kvazaar is the other one i talked about. Didn't know about libde265 having an encoder developed, i thought it's only a decoder project.

[foxyshadis]

It's a good thing that there are at least 2 fairly actively developed open source hevc encoder out there other than x265, maybe one of them will focus on transparency/high quality performance, so we wont have to wait for x265 to have something better than x264 for that purpose.

The HM is actually exceptionally high quality, pretty much always better than x265 by the metrics and sometimes visually as well, and that's a BSD license. It's 10-100 times slower, but the quality's there.

[Tommy Carrot]

Yep, HM actually has pretty good quality (unlike the h.264 reference encoder), but it's optimized for psnr, not for visual quality (or at least HM 12 was, i didn't find newer builds), and as it is a reference encoder, usability is not an important factor, so the encoding speed will always be way too slow for any practical use.