Adobe Premiere is a professional non-linear editor (NLE) for audio and video.

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To crossfade between two video streams, use "Video Transitions | Dissolve | Cross Dissolve"

To gradually fade audio to silence, use "Audio Transitions | Crossfade | Constant Gain"

To fade text in or out, use the crossfade video transition and be sure not to layer the same text overtop itself. If you do, it will "glow" since the edge colors are additive.

Edit | Preferences | General | Still Image Default Duration

Edit | Preferences | General | Video transition default duration

Edit | Preferences | General | Audio transition default duration

Import all your images

Menu | Automate to Sequence...

To create the highest quality YouTube HD videos, use the "H.264" format and the "HDTV 720p 23.976" preset in Adobe Media Encoder.

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