Seamless gif from mp4

Does your After Effects composition look the way that you want, but you're not getting the result you want from Photoshop when exporting an animated GIF? If that's the case, then instead of using Photoshop, export from After Effects using Adobe Media Encoder. In After Effects with your composition seleced, you would go to File > Export > Add to Adobe Media Encoder Queue... When Adob e Media Encoder opens (you'll need to have it installed from your Creative Cloud Desktop Application), go to the Queue panel, and use the first dropdown menu or click on the item in the Format column to select Animated GIF, use the 2nd dropdown or click on the item in the Preset column to change the preset or modify it as desired, and click on the third item to set the name of the animated GIF and where it will be saved. Click the green triangle in the upper right of the Queue panel to start the export.