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afterdawn.com > guides > Convert video files to MP4 for iPod using WinAVI iPod/PSP/3GP/MP4 Video Converter > Interface and output settings (page 2/3)
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WinAVI Software Interface


The interface for this application resembles other WinAVI interfaces. This application is capable of outputting MP4 files with any settings you want, MP4 files made for iPods, for PSPs and 3GP video. There are some options that can be edited under Menu but none significant to this process. To begin, click the iPod button.

This will open a file browser for you to select your input (source) file(s). You can select multiple files if you wish.


Input and Output Settings


When you open video files, a new window pops up for you to change some settings that will influence the output of your video. Merge all into one single file will merge all the video files together to create one large MP4 file. Select output directory allows you to select the folder that the MP4 file will be sent to when its complete. The filename will be the same as the source file, but with an MP4 extension.

Transport MP4 files to iPod directly is self explanatory. Personally I think its best to watch the video on your computer first and check sound sync and for other issues before using iTunes to transfer it to your iPod. Now for settings that will determine quality, click the Advanced button.


Bitrate Settings


Here you can change the settings for the output video and audio. One problem with this software is the relatively low bitrate option it gives for video, and the fact that you can't edit the resolution. Nevertheless it still creates some decent video, and you have to remember that iPod have tiny screens anyway so you probably wouldn't notice much difference.

The first thing to change is Video Frame Rate. This is best left on auto unless you have a preference for the framerate of your video. Video Bit Rate has 7 options; 96000, 128000, 160000, 192000, 256000, 384000 and 512000. The higher the better obviously; I don't think I'd select lower than 512000. Next up are the audio settings.

Audio Sample Rate lets you change the Sampling Frequency of the output audio stream. 24000 is the default and often the default, or only option, on other software titles. You can also choose 16000, 32000 and 48000. Once again the higher the better, but for a high sampling frequency, you must choose a high bitrate. There are 6 bitrate options for the audio stream; 32000, 48000, 64000, 96000, 128000 and 192000. Again the higher the better. Remember however that the higher the bitrate, the bigger the file size.

The last setting here allows you to split the file into chunks. This can be helpful if you have a very long file and would like to navigate through it easier on an iPod. Click the Encode tab for more settings now.


Encode Settings


Here are more settings that can influence your output video stream. First there is the small preview at the top. This will change depending on some settings you might change. Picture Clip has options for changing the positioning of the video clip on playback. Below that there are two sliders, one to adjust the height and one to adjust the width. When you change these settings, the preview will change.

Below again we have the Source aspect ratio options. Left on auto this should be fine, but if after the encoding you have a bad aspect ratio, you can encode again and choose either 4:3 or 16:9 as your option. Source audio index allows you to choose a source audio stream that will be encoded.

There are two options left one, one to soften picture if that is required in your opinion and one to Flip the picture upside down; believe it or not, quite a few videos floating around online play upside down. Enough to actually require an option to flip them in encoding software.

That's all the settings the program will allow us to edit. Click OK, and then you will be taken back to the Input/Output settings. Click OK there too and the process will begin.

<< previous Introduction & Requirements | next: Conversion Process >>

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Created: 15 February 2006 Last updated: 14 August 2007

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