64bits speed vs 32bits speed

[Dark Shikari]

64-bit memory should be nearly identical to 32-bit. If it appears to use more memory, it might be an input method issue, or a difference in how the OS allocates virtual memory. The actual memory use should remain largely unchanged.

[Juce]

x264.exe park_joy_1080p50.y4m -o nul --quiet

                          32-bit 64-bit

--preset medium --ref 1     9.93  11.25  +13%
--preset medium --ref 4     8.17   9.19  +12%
--preset medium --ref 16    4.44   4.82   +9%

--preset veryslow --ref 1   1.80   2.55  +42%
--preset veryslow --ref 4   1.66   2.29  +38%
--preset veryslow --ref 16  1.10   1.38  +25%

x264 r2164 (x264.nl), Q6600, Windows 7 64-bit

[hajj_3]

hmm, wonder why it is so much faster with the very slow preset, any ideas DS?

[Dark Shikari]

common/x86/trellis-64.asm

[Audionut]

As a matter of comparison.

x264.exe park_joy_1080p50.y4m -o nul

                           32bit  64bit

--preset medium --ref 1    28.60  32.20   +11%
--preset medium --ref 4    23.28  25.89   +10%
--preset medium --ref 16   11.50  12.34    +7%


--preset veryslow --ref 1   5.14   7.16   +28%
--preset veryslow --ref 1   4.73   6.44   +26%
--preset veryslow --ref 16  3.13   3.82   +18%

x264 r2164 (x264.nl), i7 2600K @4.5Ghz, Windows 7 64-bit

[Stereodude]

Using park_joy_1080p50.y4m with blu-ray settings:

x264.exe --bitrate 25000 --fps 24000/1001 --preset veryslow --tune film --weightp 1 --bframes 3 --ref 4 --bluray-compat --b-adapt 2 --vbv-maxrate 40000 --vbv-bufsize 30000 --level 4.1 --keyint 24 --open-gop --slices 4 --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --sar 1:1 --pass 1 -o NUL "park_joy_1080p50.y4m"
x264.exe --bitrate 25000 --fps 24000/1001 --preset veryslow --tune film --weightp 1 --bframes 3 --ref 4 --bluray-compat --vbv-maxrate 40000 --vbv-bufsize 30000 --level 4.1 --keyint 24 --open-gop --slices 4 --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --sar 1:1 --pass 2 -o PJ.264 "park_joy_1080p50.y4m"

Yes, I realize I forced the input clip to the wrong frame rate to simulate 24p content via the command line.

32bit  64bit
3.83   6.09   +59%

x264 r2164 (x264.nl) / i7-2600K @4.3Ghz / 16GB DDR3 / Windows 7 64-bit

[DarkDream]

Windows XP 64-Bit

I try to run MeGui in 64 bit mode enabled and thats the error I get when it starts to encode my video. avs4x264mod.exe

I have AVISynth 64-Bit installed

Why is MeGui giving me this error? how would I go about fixing this?

[hydra3333]

Can some kind soul please point me to a link describing how to use X264 64bit on Win7-64home/Avisynth2.5.7MT(TSP's 32-bit).
Something about piping, or an other method?
I do lots of TV capture PAL mpeg2 576i -> mpeg4, and would like to try for myself with my sources Destination=WDTVlive player.
Thanks.

[smok3]

@hydra3333
http://forum.doom9.org/showthread.php?t=144140

[Atak_Snajpera]

Can some kind soul please point me to a link describing how to use X264 64bit on Win7-64home/Avisynth2.5.7MT(TSP's 32-bit)

I think you should update your avisynth MT to less bugy version
http://forum.doom9.org/showthread.ph...76#post1564176

[hydra3333]

Thanks. Located them. I get same fps +- 1% for 32bit vs 64bit ... q9450 8Gb with SD=>SD, although "HD"->"HD" it's significantly faster for some reason. Most of my captures are SD ...