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3rd March 2015, 16:29 | #15261 | Link | |
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Edit: I have revision 4499 (2 years old by now) installed on W8.1 64 and it works with 714x478 video (both 10-bit and 8-bit H.264). Note that I have SSE2-capable CPU, it might be different on processors without that. Also maybe try if it starts to work if you disable decoding in ffdshow and use it as a postprocessor after LAV video. Proofs Last edited by mandarinka; 3rd March 2015 at 16:49. |
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3rd March 2015, 21:32 | #15262 | Link |
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You don't have to bother testing that older version, because nothing has changed with regard to the Grab filter. In fact, there haven't been any significant changes to ffdshow at all in the past years.
I can confirm the problem with mod2 width for BMP. PNG output works ok, so use that, or use Resize&Aspect to expand to a multiple of 4.
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4th March 2015, 10:44 | #15264 | Link |
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I do have SSE2, but I find PNG too slow to be practical for any kind of screen grabs without a computer from space. I usually take dozens and discard most that don't show what I want. It would be cool if the quality slider that doesn't do anything could perhaps adjust the PNG compression between none and max. I would of course use no compression for temporary grabs.
The workaround with AddBorders(0,0,2,0) works for me. I then easily crop off the extra columns with IrfanView. As far as I understand both BMP and PNG are in RGB24 color space. Here is how a broken still frame looks like: 710*480 |
4th March 2015, 15:44 | #15265 | Link | |
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8th March 2015, 18:41 | #15266 | Link |
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Moved increasingly off-topic posts about audio sampling to audio forum.
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27th March 2015, 02:13 | #15268 | Link |
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Bug with Avisynth processing?
I've written a neat Avisynth script to do some transformations on the videos. But it involves changing YV12 to YV16. If I create a avs file and load the video in it, everything displays fine. But if I put the same script into Avisynth section of ffdshow (so it is active with all videos), the output is shown in wrong colorspace and colors are displaced.
Anyone met this bug? Any idea how to solve it or is there a workaround? |
27th March 2015, 13:28 | #15270 | Link |
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Try converting back to a more common colorspace at the end of the script. Like RGB32.
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27th March 2015, 20:01 | #15272 | Link |
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Yes I did a major rearrangement in my filter (Planar YV16 to Packed YUY2)
Now it works almost well in ffdshow. There are still 2 things: for some reason ffdshow still tries to output in NV12, messing with chroma values. If I deactivate the 4:2:0 output modes, it chooses RGB . Only if I deactivate RGB output too, it stays with YUY2. Why? Btw, all other processing steps are deactivated, only the AviSynth is active. |
13th April 2015, 12:35 | #15278 | Link |
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ffdshow is already dead. There are no active developers and there haasn't been any serious development in years.
Of course, it will always remain available in its current form.
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13th April 2015, 20:51 | #15279 | Link |
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That's the upside of windows ecosystem - you can use software that is unmaintained, and stability of frameworks like dshow sorta give it chance to work with newer components.
Hmm, now I realise that when I'll get 64bit MPC/LAV Video/MadVR now, I won't be able to use FFDshow for decimating, IVTCing and other such things... I hope having a parallel 32bit and 64bit components is going to work. |
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ffdshow, ffdshow tryouts, ffdshow-mt, ffplay, icl |
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