[MEncoder-users] Call for video encoding settings

[Guillaume POIRIER]

Hi there,

I've had a little bit of time to test those settings and run a full
benchmark of those settings on a 2000 frames sample.

I ran a constant quantiser encode to test the relative compressibility
gain by each of the encode settings.

I guess those results would need a bit of "re-normalization" given
that the PSNR are fairly different, which makes a good comparison more
difficult (I guess a 2-pass encode with all those settings would help
a lot, but that's all for today for me: ;-) )

Short analysis of the results: lavc is very good to compress VERY fast
and well, XviD seems a bit better for fast High quality encode, and
x264 kicks ass when encoding for very high quality.


On 7/20/05, Guillaume POIRIER <poirierg at gmail.com> wrote:
[..]
> * Very High Quality:
> lacv: vcodec=mpeg4:mbd=2:mv0:trell:v4mv:cbp:last_pred=3:predia=2:dia=2:vmax_b_frames=2:vb_strategy=1:precmp=2:cmp=2:subcmp=2:preme=2:vme=5:naq:qns=2

3fps, 1886.141 kbit/s, PSNR: Y:50.05, Cb:51.94, Cr:52.51, All:50.66

> XviD:
> chroma_opt:vhq=4:bvhq=1:quant_type=mpeg

12fps, 1748.798 kbit/s, Average PSNR y : 48.16 dB, u : 50.61 dB, v : 51.11 dB

> x264:
> subq=6:4x4mv:8x8dct:me=3:frameref=5:bframes=3:b_pyramid:weight_b

5fps, 1300.185 kbit/s, PSNR Mean Y:51.71 U:54.79 V:55.62 Avg:52.52 Global:50.80
---------------------------------------------------------
>  * High quality:
> lavc:
> vcodec=mpeg4:mbd=2:trell:v4mv:last_pred=2:dia=-1:vmax_b_frames=2:vb_strategy=1:cmp=3:subcmp=3:precmp=0:vqcomp=0.6:turbo:psnr

13fps, 1968.337 kbit/s, PSNR: Y:50.18, Cb:52.06, Cr:52.62, All:50.79


> XviD:
> vhq=2:bvhq=1:psnr:chroma_opt:quant_type=mpeg:psnr

18fps, 1790.227 kbit/s, Average PSNR y : 48.14 dB, u : 50.64 dB, v : 51.14 dB


> x264:
> subq=5:4x4mv:8x8dct:frameref=2:bframes=3:b_pyramid:weight_b:psnr

11fps, 1473.458 kbit/s, PSNR Mean Y:51.36 U:54.51 V:55.37 Avg:52.18 Global:50.59


--------------------------------------------------------
>  * Fast:
> lavc:
> vcodec=mpeg4:mbd=2:trell:v4mv:turbo:psnr

34fps, 2043.167 kbit/s, PSNR: Y:49.89, Cb:52.04, Cr:52.57, All:50.56


> XviD:
> turbo:vhq=0:psnr

28fps, 1898.784 kbit/s, Average PSNR y : 47.65 dB, u : 50.10 dB, v : 50.64 dB


> x264:
> subq=4:bframes=2:b_pyramid:weight_b:psnr

15fps, 1554.404 kbit/s, PSNR Mean Y:51.37 U:54.37 V:55.21 Avg:52.14 Global:50.47


-----------------------------------------------------------
>   * Realtime:
> lavc:
> vcodec=mpeg4:mbd=2:turbo:psnr

49fps, 2018.563 kbit/s, PSNR: Y:49.09, Cb:51.50, Cr:52.12, All:49.82


> XviD:
> turbo:nochroma_me:notrellis:max_bframes=0:vhq=0:psnr

38fps, 2436.407 kbit/s, Average PSNR y : 48.88 dB, u : 50.71 dB, v : 51.20 dB

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