Articles - > MeGUI H.264 Conversion Guide

Title:	MeGUI H.264 Conversion Guide
Description:	A guide on how to use MeGUI to encode H.264 (MP4) files, using DVD conversion as the main example
Author/Publisher:	DVDGuy
Ease of use:	Intermediate
Software Used:	MeGUI, Nero Digital Audio Decoder/Encoder, x264
Page Viewed:	325812 times

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mrpijey: Excellent guide! The only problem I...
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Page 4 of 7: AviSynth Script Creator

Step 4: AviSynth Script Creator

For more information on all the settings of MeGUI, please refer to the MeWiki website.

This step will use MeGUI's AviSynth Script Creator tool to create an AviSynth script. If you followed Step 3, the AviSynth Script Creator tool should already be started with the D2V file created loaded. Otherwise, you'll need to load the media file you want to convert into the "Video Input" section.

AviSynth is able to open almost any video file that you are able to play with a Directshow based multimedia player, such as Media Player Classic or Windows Media Player. You may need to select the "All Files" option when opening the file to be able to see it (eg. FLV files). In most cases, you'll need to install a video codec, an audio codec and a splitter filter for the format you wish to convert.

For example, if you want to convert FLV files using MeGUI, you will first need to make sure you have the required video, audio and splitter filters to make FLV files playable in Windows Media Player. Instructions on how to do this can be found in the FLV playback section of our YouTube, Google Video Download and DivX Conversion Guide.

The "Input DAR" is the aspect ratio of the input video. In most circumstances, it should be automatically set for you. Anamorphic DVDs will be set to "ITU 16:9", for example.

Press the "Auto Crop" button to remove the black bars from the input video if it has any (most widescreen DVDs will).

Next, check the "Suggested Resolution" checkbox and change the resolution to one that you require. For DVD conversion onto a single CD (700 MB) using H.264, you can get away with using the maximum resolution (720x***). If you have specific requirements, such as conversion to iPod/PSP compatible files, please make sure the resolution you select matches your playback device's capabilities.

Click on the "Filters" tab. For films on DVDs, you usually do not need to run a deinterlacing analysis. If the content you have is TV based, then you might need to click on the "Analysis" button to see if the video requires de-interlacing. Select "Source is Anime" if that's what you have.

Again, if you followed my advice for keeping the resolution for DVD sources, then you don't need either the resize of the noise filters. Otherwise, if you chose to reduce the resolution, then you can choose how the resize will look like ("Bicubic (Neutral)" is recommended as a middle of the road choice). If the source has lots of noise, you can choose to enable the noise filter and choose how much noise is present in your source. The other options can be left alone ("Colour Correction" is automatically checked for D2V input sources).

If your source is not DVD, then you can click on the "Edit" tab and edit the AviSynth script manually to enable audio (you don't need to do this with DVD sources if you have followed this guide, since we have already demuxed the audio using D2V Creator). Simply change the "audio=false" entry to "audio=true".

Make sure the "On save close and load to be encoded" option and press the "Save" button to save the AviSynth script (by default, in the same directory as the D2V file, the filename is not important). Don't worry too much about the AviSynth Script Creator tool's preview window - it can be a little buggy where cropping and resizing and concerned. After saving, the AviSynth file should be loaded automatically into MeGUI - MeGUI's preview window does work fine and please make sure the video looks alright, especially for DVD sources with cropping/resize.

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Article Navigation:

Page 1: Introduction and Installation
Page 2: DVD Ripping
Page 3: D2V Creator
Page 4: AviSynth Script Creator <--
Page 5: Video Encoding Options
Page 6: Audio Encoding Options
Page 7: Cutting, Bitrate Calculator and AutoEncode

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User Comments:

Excellent guide! The only problem I have with this approach is that you can't control the output resolution very efficiently (meGUI reports 16:9, but outputs the video in 4:3 anyway, and if manually resized the output is skewed anyway) and the output video is extremely washed out compared to the original. I played back the resulting mp4-file in Quicktime, VLC and other players and it's the same on all, blacks are grey. The entire picture has a LOT of brightness.

Thanks, I've been trying to learn how to use this tool. There is a doubt in using autoencode: I'm not sure the profile I chose is used or not. for example, in the main input interface, I chose MKV as container and then the video profile. But when I press autoencode, the window pops up did not show any chosen profile while the container is MP4 as default... It feels the the settings in main input interface are ignored?

Astro_Toy: Rest assured that the profile settings are being used. However, you do need to separately select the container (MKV, MP4) since this setting is not part of the profile.