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Need to do very small edit
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janlafata
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7. July 2009 @ 05:19 |
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I have an AVI file where the music starts playing right away when I play it in WMP but the video doesn't actually start for about 5 seconds. Until that real video starts is this yucky green screen that I want to get rid of.
What's the best tool to use to just take out the 3-4 seconds of green screen without affecting the audio underneath it?
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AfterDawn Addict
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7. July 2009 @ 10:34 |
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You can use VirtualDub and the Donald Graft logo filter to insert an image that is the same resolution as the video.
Note the frame numbers that have to be covered and insert these values in the filter.
Also that 'Full processing' is required and you select a compressor that is the same as the input - configure the codec to a higher bitrate than the source to compensate for the re-encoding.
http://neuron2.net/logo/logo.html
View My Video
This message has been edited since posting. Last time this message was edited on 7. July 2009 @ 10:37
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janlafata
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7. July 2009 @ 16:48 |
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Downloaded the logo filter. Where do I extract it to? Also, the video you mentioned played but it only lasted about 10 seconds then seemed to freeze! Not sure if that's what you wanted me to see either..just some guy driving in a car!
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AfterDawn Addict
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7. July 2009 @ 17:37 |
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Copy logo.vdf to the 'Plugins' folder.
The filter is listed under 'Video' > 'Filters' > 'Add' and should be listed as Logo(1.7b2)
The clip is only ten seconds with a logo over the first four seconds.
This message has been edited since posting. Last time this message was edited on 7. July 2009 @ 17:39
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janlafata
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7. July 2009 @ 20:28 |
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Duh..on my part for not getting that in the video! Ok so now I must add..I am not that experienced, at all, with VirtualDub. Is there any way you can go through this step by step. I know to open up the program and import the video.
After that I think you wanted me to go to "Video" and "Filters", which I did. After that, I clicked on "Add", but I'm assuming that before I get to the next step that I will have had to load that logo filter first, correct? While were on that subject, can I use any BMP image?
This is about as far as my understanding goes. After this step, I start to get lost!
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AfterDawn Addict
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7. July 2009 @ 21:26 |
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Since the video has to be encoded, you need to install the codecs that might be used.
Usually DivX or XviD - DivX has a free codec and XviD is always free..
You can Google these and install them.
Run VirtualDub.
Load or drag the video file into the window.
Click 'File' > 'File information' and check the frame size and the codec that was used to encode the file(DivX or XviD??)and the data rate (bit rate)
E.G. 576x320 XviD 700KBS
Keep VirtualDub open.
Create or crop a .bmp file to the same resolution using Windows Paint or the likes of IrfanView.
In VirtualDub use the slider to find the frame where the good video begins - the frames numbers count off under the slider.
Click 'Video' > 'Filters' > 'Add' > double click on 'logo 17b2'
'Show Preview' and browse to your new logo.
Insert the starting frame (0) and the last frame (duration).
If the part to be covered runs from 0 to 100, then those are the values in Starting Frame and Duration.
Since it's the same resolution as the video it fills the screen and covers up everything.
'OK' back to the main window and click 'Video' > 'Full processing Mode' > 'Compression'
Select the same codec as your source file.
Click on the 'Configure' button and increase the bitrate to compensate for the loss of quality caused by recoding.
For example, the DivX default setting is 780 - change it to 1200.
Click 'File' > 'Save as avi'.
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AfterDawn Addict
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8. July 2009 @ 17:31 |
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AfterDawn Addict
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8. July 2009 @ 18:52 |
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@MysticE
Tried it and it works ok - can use the default settings in the compressor instead of upping the bit rate too.
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janlafata
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8. July 2009 @ 19:40 |
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I like this Fade-in filter. Definitely brings a new dimension to editing.
Thanks attar for all of help on this!
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AfterDawn Addict
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9. July 2009 @ 14:57 |
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Originally posted by attar:
@MysticE
Tried it and it works ok - can use the default settings in the compressor instead of upping the bit rate too.
Good to know.
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janlafata
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9. July 2009 @ 22:23 |
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I was messing around with the Fade-in filter, performed most of the steps as above for the Logo filter, picked a starting point where I wanted the fade from black to come in, and it came in somewhat earlier than what I picked where a little of this green screen was. Dunno what I did wrong.
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AfterDawn Addict
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10. July 2009 @ 01:51 |
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Make sure you are using 'key frames'.
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janlafata
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10. July 2009 @ 03:08 |
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Where is that? I opened up VirtualDub and I can see where it says "Frame 0", then when I open the video file, that kind of changes and now on the right of "Frame 0" there are parenthesis with (0:00:00.000)(K) Is it what's in those parenthesis?
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AfterDawn Addict
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10. July 2009 @ 05:58 |
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The key frame is a transition point in the video.
Clicking on the icons which look like little yellow 'keys' will step through the video.
Normally (even though you select a non key frame for an effect or cut) the change will take effect on the key frame.
The number of frames between key frames varies (I think it's 15 for a DVD - maybe 100 for an AVI) it's a setting in the codec properties.
To get around the limitation, select the frames you wish to process and make sure that under 'Video' the following applies.
Full Processing - required to select a Filter.
Smart Rendering - applies encoding to the non-key frames.
Compression - must select the same compressor as the source.
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