Quote:
Originally Posted by shekh
This looks like terrible and unexpected difference.
Cache cannot help with sequential read - this is ok.
Some common ideas: are you comparing same architecture (x64 executables)?
Make sure the decode format is "autodetect", and there is no unwanted format conversion in the middle.
Run benchmark analyze pass or open Real-time profiler, it shows some performance details.
You can test all 3 input drivers in VD2
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Hey shekh!
* Decode format is set to Autoselect, I've never changed that option before. Virtualdub1 doesn't appear to have that option.
* I'm not sure what the benchmark is, but if it's Tools -> Benchmark Resampler then here is the outputs:
Quote:
Virtualdub1 32 bit:
Point: 0.13 ms, 5896.9Mpixels/sec
Linear: 1.80 ms, 437.8Mpixels/sec
Cubic: 1.55 ms, 507.9Mpixels/sec
Lanczos3: 2.07 ms, 379.9Mpixels/sec
Virtualdub2 32 bit:
Point: 0.15 ms, 5314.0Mpixels/sec
Linear: 1.80 ms, 437.0Mpixels/sec
Cubic: 1.55 ms, 507.8Mpixels/sec
Lanczos3: 2.07 ms, 380.1Mpixels/sec
Virtualdub2 64 bit:
Point: 0.24 ms, 3219.2Mpixels/sec
Linear: 1.46 ms, 540.5Mpixels/sec
Cubic: 1.26 ms, 622.5Mpixels/sec
Lanczos3: 1.68 ms, 468.2Mpixels/sec
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If it's some other benchmark, then just point me in the right direction.
* As a side note, benchmark-wise, just checking pure FPS, using MagicYUV the peak for Virtualdub1 32 bit was 113 fps, and the peak for Virtualdub2 64 bit was 64 fps.
* I'm not sure what I'm looking for with Real Time Profiler. If you want me to screenshot something specific while I'm running it, or after it finishes, let me know.
* My Virtualdub1 is 32 bit, and that was a good question, so I tried comparing it against both the 32 bit and 64 bit versions of Virtualdub2. I put DShowInputDriver in the plugins32 folder of Virtualdub2 because that's where it is in my Virtualdub1, and I closed and re-opened Virtualdub2 when switching between DShowInputDriver and the default decoder. Also, I re-ran Virtualdub1 again just to have a baseline. Here's my results:
Quote:
Virtualdub1 (32 bit, default with no DShowInputDriver) - Error, can't load the mov file.
Virtualdub1 (32 bit, DShowInputDriver)
Uncompressed: 15
Magic: 13
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Virtualdub2 (32 bit, default)
Uncompressed: 25
Magic: 23
Virtualdub2 (32 bit, DShowInputDriver)
Uncompressed: 27
Magic: 24
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Virtualdub2 (64 bit, default)
Uncompressed: 26
Magic: 23
Virtualdub2 (64 bit, DShowInputDriver)
Uncompressed: 27
Magic: 23
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I'm sure you already have it, but here's my copy of DShowInputDriver.vdplugin in case you want to test on your end:
https://we.tl/t-eJ0aNxyu5W
Let me know if you want me to test anything else, I'm happy to do so. Thanks!