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  1. Hi. In Ripbot 1.18.1, I use this setting for Rip BD source to 800 MB mkv: High4.1, very slow, film

    Code:
    --level 4.1 --preset veryslow --tune film --aud --nal-hrd vbr --vbv-bufsize 62500 --vbv-maxrate 62500
    and windows task manager during encoding is :

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    and System Feature :
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    Why Ripbot don't use whole power of CPU ? is there any way to solve this problem ?
    Encoding a 800 mb mkv takes 5 hours, is it normal ?
    Last edited by vivabarca; 2nd Nov 2014 at 17:41.
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  2. Mod Neophyte Super Moderator redwudz's Avatar
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    In a 2 pass encode, pass one doesn't normally use the full CPU resources. But when you run pass two, it should be very close to 100% CPU, at least it is on my PC during an encode.

    My settings for a Blu-ray to MKV conversion is a two pass encode, size set to 7900MB, H.264 MKV with AC3 6 channel audio at 640 Kbps. Everything else at default.

    My last BD>MKV encode took about 3 hours and that's about average.
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  3. thanks, does MeGUI use the full CPU resources in both passes ? (pass 1 and 2 )
    Which is faster in same setting for encode ? (High4.1, very slow, film)
    MeGUI or Ripbot ?
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  4. They will be about the same, both will use the same CPU resources.

    Certain settings are likely bottlenecking your encode . For example b-adapt 2 isn't very well multithreaded and can be a bottleneck

    Hint : --preset veryslow means.... very slow , so if you want it faster, use a faster preset
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  5. Running two encoding jobs simultaneously tend to keep the CPU pretty busy.

    Or sometimes I split an encoding job into halves, encode them at the same time, then append the video with MKVMergeGUI. If you do that, add -stitchable to the x264 command line so you won't have an issue appending the encoded video (assuming the same settings are used each time).
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