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| ecokid |
| Posted: Nov 30 2011, 08:25 AM |
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Member
Group: Members
Posts: 20
Member No.: 22216
Joined: 8-October 07
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Hi Again
I look through a lot of video with differing lighting. It would be great if you could see a frame-by-frame histogram of the current frame on screen.
In fact, thinkig about it if there was a 'convert video to histogram filter, I could preview both the input (avi) and output (histogram) windows.
Is this already a feature that I can't find or is it too crazy for general appeal?
Must drink more coffee.
Thanks
Steve |
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| ecokid |
| Posted: Dec 12 2011, 03:53 PM |
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Member
Group: Members
Posts: 20
Member No.: 22216
Joined: 8-October 07
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Gosh no replies. Guess it's too crazy an idea then! I would like to correct a video for lighting changes and a histo would be very useful but I guess I'll have to look elsewhere for this feature :-)
Cheers
Steve |
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| ale5000 |
| Posted: Dec 12 2011, 04:10 PM |
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Advanced Member
Group: Members
Posts: 1114
Member No.: 22180
Joined: 30-September 07
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I don't know but there are a lot of video filters for VirtualDub for almost everything.
Try to find them on Google.
--------------------
New VirtualDub forum
VirtualDub AIO (All-in-One installer for VirtualDub and plugins)
Codec Toolbox RS (A tool to read/change merit of codecs and many other things)
Input plugins for VirtualDub / ACM codecs / VFW codecs |
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| russell_t |
| Posted: Dec 12 2011, 04:34 PM |
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Newbie
Group: Members
Posts: 9
Member No.: 25881
Joined: 20-July 09
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Avisynth has a histogram filter that might be useful to you:
http://avisynth.org/mediawiki/Histogram
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| ecokid |
| Posted: Dec 13 2011, 06:14 PM |
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Member
Group: Members
Posts: 20
Member No.: 22216
Joined: 8-October 07
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Thanks both for your replies. I did spend quite a lot of time searching for this feature, but couldn't find it. I don;t think there's any 'display histogram during playback' filter. Could be wrong though :-)
I've glanced at avisynth before but been too stingy to invest the time in learning it - guess I'll have to bit the bullet.
Russel_t thanks for the link - that is EXACTLY what I want. Is there a noobs guide to using avisynth with vdub? or is that included in the download?
Onward and upward....
Steve |
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| russell_t |
| Posted: Dec 13 2011, 07:21 PM |
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Newbie
Group: Members
Posts: 9
Member No.: 25881
Joined: 20-July 09
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| QUOTE (ecokid @ Dec 13 2011, 06:14 PM) | | Is there a noobs guide to using avisynth with vdub? or is that included in the download? |
You can download Avisynth from this link:
http://sourceforge.net/projects/avisynth2/
Run the downloaded exe file to install Avisynth.
Open a text editor such as notepad and create a script such as:
avisource("your_filename.avi")
histogram(mode=" ")
In the first line, replace the your_filename text above with the avi file you wish to open.
In the second line, enter the histogram mode of your choice, based on the information from the wiki page linked above.
For path / scripting simplicity, save the file in the same folder as your avi file; give it a filename of your choice and use .avs (rather than .txt) as the filename extension.
Open (or drag-and-drop) this .avs file in VirtualDub.
Hope that helps.
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| ecokid |
| Posted: Dec 13 2011, 09:24 PM |
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Member
Group: Members
Posts: 20
Member No.: 22216
Joined: 8-October 07
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Hi Russel
That helps loads thanks! I'll download it, follow your excellent instructions and have a play. I bet all the bells and whistles I need are in avisynth.
Thanks again
Steve
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