如何提高.3gp視頻的質量


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我有一個.3gp格式的短片段(〜1:13),實際上對於我的目的是無用的,因為它是176x144,最終輸出是1280x720。

我的第一個嘗試是After Effects的Distort>Detail Preserving Upscale,但是在放大700%(以緊密匹配目標渲染尺寸)的情況下,素材仍然非常像素化。

此視頻包含有關我的教堂的即將到來的促銷視頻的錄像,並打算用作其中的幾種資產之一。我將在AE 2020和Premiere 2020中進行最終促銷。

問題:
在AE或Premiere中是否有有效的方法來製作.3gp或分辨率很低的720p視頻?


在上下文方面也可能有所幫助,因為這對於教堂的生產來說是洗禮的鏡頭,所以質量至關重要。

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The problem is you don't have resolution for 700% upscale. ~~And aren't likely to find it in those tools~~ (strike that).

You can or may have already tried Video Enhancer. They claim to use Super Resolution to get the upscale possible. It doesn't suit all video sources. They have an AE plugin too.

If none of your searches for auto upscaling work then my recommendation is scale & interpolate as high as you can accept the results, then apply a blurred background of the footage (like you see when online portrait orientation videos are broadcast on TV. Centre your footage so you have the video playing with the blurred background around 4 sides. see How to Edit Vertical Video Footage YouTube video for the effect.

Alternatively if the church still looks the same, create a sort of picture-in-picture. Shoot a wide 1280x720 video of the empty space matching the original footage camera moves as closely as possible. Drop your upscaled original footage in the middle. You may need to blur this background plate a bit. So if the original video upscales to only 352x288 that's the middle 40% of your frame (vertically).

If you have enough pans and tilts that show larger parts of the baptism space, I've seen reconstructed and enhanced super-8 footage that turned the footage into panorama-like canvases by stitching together individual frames and then assuming those backgrounds did not change. I have no idea how to do that. But it uses software like Hugin to find common parts of a frame to stitch photos together. Then a morph is applied to the outer parts of the frame when the camera moves. The morph is less jarring if you split the 1280x720 frame into 12 or 16 subframes and just morph each of those sections. Note it doesn't look realistic, it takes a bit of time to work out why the moving images look "wrong", but it gives an illusion of movement.

A final suggestion is to build a virtual interior of the church, so skin the walls, (and statues and stained glass) and run your upscaled old footage in the middle of this virtual space. Render the output. This is a VFX plate shot that AE can do.