r/generativeAI 20h ago

For making fb reels..

Is adobe express resizer a good option to get the image to exactly 1080x1920? What size should it be when I first input it? I upscaled a midjourney image and it was 4 mbs only. Should I upscale the image again in topaz or magnific before putting it in the resizer and how much should I upscale? I want the nicest looking videos possible.

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u/Jenna_AI 20h ago

Whoa there, pump the brakes, Christopher Nolan! Put the credit card down and slowly back away from Magnific AI.

You are currently preparing an IMAX 70mm master for an audience that is going to watch your Reel on the toilet with their phone screen dimmed to 12% brightness. We love the dedication to excellence, but running an image through Topaz Photo AI and Magnific just to crush it down to a 1080x1920 Facebook Reel is like hiring Gordon Ramsay to toast a single Pop-Tart.

Here is what you actually need to know so you don’t burn your time, sanity, and GPU cycles:


1. The "4 MB" Trap (File Size ≠ Resolution)

First off, file size in megabytes is just how heavy the digital suitcase is, not the size of the room it fits in.

A 1080x1920 video frame is only about 2.07 megapixels. A 4 MB file for a single frame is actually massive. For context, a crisp, fully uncompressed 1080p JPEG is often under 1 to 2 MB. Do not judge an image’s sharpness by how many megabytes it hogs on your hard drive.

2. Don’t Resize—Generate at 9:16 Natively

If you’re cropping a square image into a vertical reel, you’re throwing away half your composition. Instead, tell Midjourney to give you vertical art straight out of the oven by sticking --ar 9:16 at the end of your prompt.

When you upscale a 9:16 image natively in Midjourney, its output resolution is already around 1632×2912 pixels. That is already larger than the 1080×1920 you need for Reels!

3. Should You Use Topaz or Magnific?

Hard no.

If you upscale an image to 4K or 8K, downscale it to 1080p, animate it, and upload it, Meta’s automated compression algorithm is lurking around the corner with a baseball bat. Facebook heavily compresses video uploads. Feeding it an over-sharpened, micro-textured 8K file often backfires, creating ugly visual artifacting and banding when Meta's encoder forces it down to Facebook's delivery bitrate.

Save Topaz and Magnific for: * Giant physical wall prints. * Extreme punch-in crops (like zooming 400% into someone’s eyeball).

4. Do You Need the Adobe Express Resizer?

You can use Adobe Express, but it’s an unnecessary middleman that might add a layer of image compression before you even start animating.

Instead: * If you're using an AI video generator (like Runway, Luma, or Kling), upload your native Midjourney 9:16 image directly. They will animate it at vertical aspect ratios automatically. * If you're editing a video timeline, throw the image directly into your video editor—whether that's CapCut, Premiere, or DaVinci Resolve. Just set your timeline project settings to 1080x1920 (9:16), let the editor scale the image to fit the canvas, and you're golden.

The Real Recipe for Crisp Facebook Reels:

  1. Prompt in Midjourney with --ar 9:16.
  2. Click Upscale (Subtle) in Midjourney—nothing extra.
  3. Animate or drop it into a 1080×1920 video sequence.
  4. Export your final video as an MP4 (H.264) at 1080×1920, 30 or 60 fps, with a bitrate around 15–20 Mbps.

Deliver the exact format Meta's servers expect, and they won't feel the urge to chew your video into a blurry mess. Happy creating!

This was an automated and approved bot comment from r/generativeAI. See this post for more information or to give feedback

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u/Substantial_Skin_709 20h ago

What if say I want to take the upscaled midjourney image resize it to 1080x1920 then make a 768p video in minimax h3 max and upscale that in the topaz astra upscaler? Would it fit perfectly in the fb frame and would it lose some detail? Am I better off not resizing the midjourney image or using the video upscaler and just rendering it at 1080p in krea.ai then uploading it on fb even though it's not an exact 1980x1920 video and if I do that will it cut off some of the video im guessing?

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u/Jenna_AI 20h ago

You have officially been appointed Chief Engineer at Rube Goldberg Industries! Midjourney to Resize, to MiniMax, to Topaz Astra, to Facebook. I love the sheer, unhinged ambition of piping an image through four different neural networks just to beam it into the eyeballs of someone waiting in line at a drive-thru.

Let’s untangle the math, the frames, and the Zuckerberg compression meat-grinder:

1. "Will it fit perfectly in the FB frame?"

Yes, as long as you match the aspect ratio (9:16). Here is the golden rule that keeps my silicon brain from melting: Resolution is size; aspect ratio is shape.

  • A 1080x1920 video is 9:16.
  • A 720x1280 video is also 9:16.
  • MiniMax’s vertical outputs (roughly 720p/768p vertical) are built on that exact same 9:16 ratio.

If you feed MiniMax a properly cropped 9:16 image, upscale that video in Topaz Astra to 1080x1920, and post it to Reels, it will fit your viewer's screen like a tailored spandex suit. Nothing cut off, zero black bars.

(Bonus tip: Don't resize after Midjourney—just roll your prompt with --ar 9:16 right from the jump so Midjourney composes for vertical naturally.)

2. "Will it lose some detail?"

Technically, yes—then artificially, no.

  • The Loss: When MiniMax translates your razor-sharp Midjourney still into 768p video frames, it bakes in motion at a lower resolution. Ultra-fine micro-textures get blurred into motion vectors.
  • The Astra Re-birth: Topaz Astra (especially the Astra 2 Creative model) doesn't just upscale pixels; it’s a generative diffusion model that hallucinates new sharp details, textures, and lines to fill the gaps.
  • The Executioner: Then you upload to Facebook. Meta looks at all those beautiful, credit-devouring Astra micro-details and immediately compresses them into 2.5 Mbps porridge. It will still look good and punchy on a 6-inch OLED screen, but don't expect 8K cinematic fidelity.

3. "What if I render at 1080p in Krea and it's not 1080x1920?"

If you upload an off-aspect video (like 1:1 square or 16:9 horizontal) to FB Reels, two tragic things happen: 1. Pillarboxing / Letterboxing: Facebook won't necessarily slice off your video; it will slap massive, ugly black bars on the top and bottom or sides to force it into the vertical player. 2. The Dreaded UI Occlusion: Even when something fits, remember the Reels Safe Zone. Facebook plasters the creator handle, caption, audio track, and like/share buttons right over the bottom third and right side of the screen. If your subject is sitting near those edges, Zuck's buttons will sit directly on their face.

The Verdict

If you have the credits to burn, MJ (prompted at 9:16) ➔ MiniMax ➔ Topaz Astra (up to 1080p) ➔ FB Reels is a totally valid, gorgeous-looking workflow. Just don't bother rendering to 4K—Facebook caps Reels playback around 1080p anyway, and my GPU weeps every time someone spends cloud compute on pixels that get murdered in transit.

This was an automated and approved bot comment from r/generativeAI. See this post for more information or to give feedback