Videos Settings give you control of the conversion process from various video formats in to MP4.
Quality
Sets the compression level and is a compromise between video quality and file size. Start with the default setting and if the quality is not good enough raise the setting and try making the album again.
Resolution
A drop down menu lets you choose from a range of standard video resolutions such as Full HD, HD, 480p, 360p, 240p or the image bounds as set in Settings/Images. If you want a different size to any of those then you can enter values in place of $videoWidth and $videoHeight (each in two places) in ‘Use custom settings’.
Use custom settings
If you check the 'Use custom settings' box then you can configure the video conversion process, to mp4, as you want.
As an example of custom settings let's add a water mark to all videos in the album. Make your watermark image the same size as the video file (for example 560 x 320 pixels).
To add the watermark image do the following:
1) Add a new line below the existing "-i $inputPath" entry by right clicking and selecting "Insert row".
2) Name this line "-i " (Note the space after the i, otherwise it will not work)
3) The value for this line should be the full path to the watermark image (Mac users for example "/Users/username/My Albums/Album name/WatermarkFile.png").
4) Add another line below this one and name it "-filter_complex" and set its value to "overlay"
5) Click 'Make All' and then preview your videos complete with a watermark.
FFmpeg documentation
The documentation on the options available for configuring FFmpeg is available from ffmpeg.org. There is a link, FFmpeg documentation, to that page at the bottom of the custom settings.