Friday, 22 May 2009 02:35
A continuation of my first MeGUI Tutorial.
MeGUI is a graphical user interface for encoding your videos into the increasingly popular format H.264. MeGUI is a straightforward and easy to use program that makes encoding your videos to H.264 easy. It tells you when updates are available and will download and install all of the required components automatically.
This is a continuation of my last MeGUI tutorial, which showed you how to convert AVI videos into H.264. This tutorial shows you how to convert almost any video into h.264 using the K-Lite Codec Pack.
It would be a good idea to check out the first tutorial before watching this one.
(REQUIRED) Get AviSynth: http://avisynth.org/mediawiki/Main_Page
Get MeGUI: http://sourceforge.net/projects/megui/
Get Nero AAC: http://www.nero.com/eng/downloads-ner...
To install it, extract "NeroAacEnc.exe" into the root directory of MeGUI. Then choose any of the Nero AAC Audio presets in MeGUI. No restart is required.
Last Updated (Sunday, 23 May 2010 02:14)
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letmeknowhow.weebly.com/4/post/2013/02/megui-full-video-conversion-guide.html
#deinterlace
#crop
#resize
#denoise
What exactly do I type in the resize line to change a 848x480 resolution to 1280x720. I have tried adding (1280,720) after resize but it did not work. I'm guessing I did it wrong. Sorry I'm very newbie at this.
Can u make a tutorial in upscalling videos.
Hi,
I try to make it painfully obvious in the video tutorial about how to reencode the audio track from a video.
First, you have to create the AviSynth script using the "AVS Script Editor" found in the "Tools" menu. The very last thing you want to do before you click the "Save" button is go to the third tab, the "Script" tab. From there, you'll notice at the end of the first line, it says, "Audio=false", simply change that to "true" and then save the AVS file.
Now, once you have loaded the AVS file into MeGUI, in the bottom half you can select an audio track. Next to "input", press the "..." button and choose the AVS file you just created. You can then choose whatever preset you want.
I prefer to use the Nero AAC Encoder because it lets me choose a constant bitrate (CBR), unlike FAAC which only does Average bitrate (ABR) or Variable bitrate (VBR).
You can download the Nero AAC Encoder here: www.nero.com/eng/downloads-nerodigital-nero-aac-codec.php
Simply extract "NeroAacEnc.exe" to the root directory of MeGUI and you will be able to choose any of the Nero AAC audio presets.
Make sure you press the "Auto Encode" button at the very bottom of the MeGUI window. It will perform both the video conversion and audio conversion steps automatically, as well as combine the video and audio into a single file. If you press the "Enqueue" buttons, it will only encode the video (or audio). After clicking "Auto Encode", be sure to check "Add additional content."
(I have covered all of this in the video tutorial, but since I'm nice, I have written it out for you)
Note: Depending on the audio codec used in the video you want to convert, this should work pain free. If the .AVI or .MKV (or whatever) contains an audio track encoded using an audio codec you don't have, you will get an error. So, make sure you have the audio codec for the video before you attempt this. K-Lite codec pack (www.codecguide.com/download_kl.htm) or CCCP (Combined Community Codec Pack) (www.cccp-project.net/) contain codecs for most audio formats.
I hope this helps,
-Neil
Well, HD stands for High Definition, which implies higher resolution. Upscaling a video from a 480p source to a 720p or 1080p means that you are increasing the resolution, therefore making it higher definition.
But I know exactly what you're trying to ask. You want to know why the video doesn't look any better. Well, that's the thing. Upscaling doesn't do anything at all to improve the quality of the video. In many cases the quality will be lower due to the second layer of compression and/or bitrate settings.
In fact, the only way to ensure an upscaled video looks identical bit for bit is to use a lossless codec, and that can increase the original filesize more than 5-10 times the original, which therefore introduces extra decoding power requirements, which isn't practical at all.
Upscaling is most practical when hooking up a video game console or a DVD player to an HDTV via HDMI/component cables. The upscaling takes place behind-the-scenes in that case.
As for forcefully upscaling a video so that the video itself is a higher resolution, I can think of only one reason to do that. To fool video streaming sites like youtube into dedicating a higher bitrate to your video to preserve as much quality as possible. Youtube is forced to use higher bitrates for higher resolution videos to compensate for the quality loss that would occur (assuming they used a fixed bitrate for videos of any resolution). That's a earful, sorry.
Another reason upscaling can be useful is for mixing low resolution videos in with high resolution videos. You wouldn't want to take a high resolution video and make it smaller to match the low resolution videos, you would want to do it the other way around. An example of this would be documentaries. Documentaries are filled with videos of all shapes and sizes. They have to upscale the older footage to fit with the high resolution videos. That doesn't make them any higher quality, that just makes them fit your screen instead of looking extremely tiny with black borders on all 4 corners.
Upscaling is, otherwise, pointless.
Also, after looking at the guide, it's CLEAR that whoever wrote that guide used images from 2 different sources to illustrate the quality difference when upscaling a video from a low resolution. You cannot gain detail from a lack of detail. Plain and simple. The author of that guide used a high resolution image (probably to fool people into thinking upscaling would be beneficial).
Don't believe me? Look at the hairs. In the first image, the hairs are blurry. In the second, they are crystal clear. You can even see the pores on his face. You can barely see his teeth in the first image. If you were to upscale a low resolution image and apply a sharpen or an unsharp mask filter to it, you would make it look sharper, yes... but that wouldn't actually "add" the extra details to the image. Put simply, that author is full of crap.
-Neil
Here is a guide I found about upscaling video..
www.bwtorrents.com/showthread.php?t=218648
It claims that the end result will be an upscaled movie with HD video. As u can see the difference in the last two images in the guide in the above link.. So my question is that... Is it really possible ? Because when I tried to upscale an AVI video the end result was an upscaled video but of the same quality without HD..
That is one of my biggest pet peeves when it comes to MeGUI. I believe the creators have a little bit of philosophy when it comes to that and refuse to allow upscaling of a video. That annoys me to no end because it actually serves a purpose. Anywho, there is a solution.
First, check "resize" in the "AVS Script Creator" window. This will add the resize entry in the avisynth script. Now, at the top of the window, click the "script" tab. In here, you should see the line for Resize.
Resize(#,#). The first # is the width, the second is the height. Just change those how you see fit.
Word of caution, anything you manually change from the script editor window must be performed LAST (before saving). If you attempt to change anything from the "I/O" tab or the "Filters" tab, it will undo your changes.
Another way you can do this is by manually editing the created AVS file with notepad. The file will be located in the same folder as the source video.
Obviously, this does not give you the benefit of automatic aspect ratio correction (Suggest Resolution Mod16), but we will have to live with that drawback until the developers of MeGUI decide to get some sense.
-Neil
But another question is how to upscale any video which has low resolution. As MeGUI is not letting me to resize the video more than the size of the original video :unsure: .
waiting for ur reply..
You should be able to resize your video from the Avisynth Script Creator Window.
In MeGUI, go to your tools menu, choose "AVS Script Creator". Select the video you want to resize by clicking the "3 dots" button next to "Video Input (at the top). A preview window will appear, leave it open for now, as it will serve as a good visual for when you resize the video.
You should see a checkbox called "Resize" Just check that and type the resolution you would like to use.
Tip: You can check "Suggest Resolution (Mod16)" and it will turn the height box gray. This way, whatever number you use for the width, it will automatically choose the correct number for height to keep the aspect ratio from changing.
Also, you can check, "Apply auto preview" to see the resolution change in the preview window instantly.
I hope this helps,
-Neil
:arrow: I have video of resolution (1280*720) which I can't play in my P4 PC.
:arrow: So I want to resize them to a little lower resolution (720*304).
:unsure: Please help..