Most of the time, it’s not an issue, but I’ve seen it before… As described above, you can probably see why this would be the case. While in most cases you can achieve the result you want–a fade to or from black–using a cross dissolve as you’ve outlined, this can cause problems when you export to a format/codec that supports alpha/transparency. A Premiere Pro sequence is 100% alpha when the frame dimensions are not completely filled with 100% opaque clips you can see this by changing the Display Mode to Alpha and placing a clip that has smaller dimensions than the sequence into the sequence. If you use a cross dissolve on a base video layer to fade in or out to black, you’re actually dissolving to or from transparency. Strictly speaking, a Fade To/From Black is exactly that: a fade TO or FROM black. However, I don’t agree with you on using a cross dissolve as a single-side transition to achieve a fade in or fade out. You could even use this technique to make the colors in the video change using the Change to Color effect.I understand your point on transitions, particularly Dips and Fades. You can also change the speed that the color fades in by editing the video transition. It’s worth noting that you can also use technique to fade from a colored video to black and white. Since these videos are in sequence of each other, with the only difference being that the first part is in black and white, it will give off an appearance of a black and white video with color eventually fading into the picture. This will cause the videos to fade from one to the other. Now, once again in the Effects tab, click “Video Transitions > Dissolve > Cross Dissolve” and drag this transitions to the cut in the video you just made. This will make this portion of the video black and white.
Now you can remove the color from the first part of the video by going to the Effects tab and clicking “Video Effects > Image Control > Black & White” and drag this effect to the first part of the video cut.
This will make a cut in your video, making two separate video parts.
Now pick the part of your video where you’d like to fade in the color and click this part of the timeline with the Razor tool. With the video you want to edit in your sequence timeline, click the “Razor Tool” in the tools menu next to your sequence. This is a much simpler way of doing this than anything I’ve found on the internet. Here’s an easy way I’ve found to make a video fade from black and white to fully colored, or vice-versa.
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