本文介绍了我如何高档的iOS应用preVIEW视频至1080点¯x1920?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我刚刚拍摄的在iPhone上运行6我的新应用程序中使用的 QuickTime播放器的和闪电电缆的视频。后来我创建的的iMovie 的一个App preVIEW项目,出口,并可以将其成功上传到iTunes连接。

I just captured a video of my new app running on an iPhone 6 using QuickTime Player and a Lightning cable. Afterwards I created an App Preview project in iMovie, exported it and could successfully upload it to iTunes Connect.

苹果要求开发者上传的不同的决议应用previews依赖于屏幕尺寸,分别是:

Apple requires developers to upload App Previews in different resolutions dependent on screen size, namely:


  • iPhone 5(S): 1080点¯x1920 或640×1136

  • iPhone 6:750点¯x1334(我有)

  • iPhone 6+: 1080点¯x1920

  • iPhone 5(S): 1080 x 1920 or 640 x 1136
  • iPhone 6: 750 x 1334 (what I have)
  • iPhone 6+: 1080 x 1920

显然,1080点¯x1920杀害二鸟一石。我知道,倍增并非完美的解决方案,但它满足我的需求。由于我没有自己的6+,另一个记录会话都不会做的伎俩。

Obviously, 1080 x 1920 is killing two birds with one stone. I know that upscaling isn't the perfect solution, but it's meeting my needs. Since I don't own a 6+, another recording session won't do the trick.

不幸的是,iTunes Connect的是什么,接受极其挑剔。这是我试过了,没有用:

Unfortunately, iTunes Connect is extremely picky about what to accept. Here's what I tried, to no avail:


  • 手刹,iMovie中,QuickTime的不支持像素提升

  • MPEG Streamclip

  • 的ffmpeg -i input.mp4 -a codeC副本-vf规模= 1080:1920 output.mp4

  • Handbrake, iMovie, QuickTime do not support upscaling
  • MPEG Streamclip
  • ffmpeg -i input.mp4 -acodec copy -vf scale=1080:1920 output.mp4

奇怪的是,iTunes Connect中不断抱怨错误的分辨率,当我尝试上传的output.mp4的的ffmpeg

Strangely enough, iTunes Connect keeps complaining about the wrong resolution when I try to upload the output.mp4 of ffmpeg.

推荐答案

最后,的ffmpeg -i input.mp4 -a codeC副本-crf 12 -vf规模= 1080:1920,setsar = 1:1 output.mp4 的伎俩

原来,ffmpeg的尝试是聪明的纵横比,使实际尺寸1079x1920 2000的长宽比:2001

Turns out that ffmpeg tries to be smart about aspect ratio, so that the actual size is 1079x1920 with an aspect ratio of 2000:2001.


  • setsar = 1:1 强制为1的长宽比:1,因此,在右键解决方法

  • -crf 12 作为期望的质量结果大致在同一文件的大小由iMovie中创建的原始文件,所以它应该是一个安全的赌注比特率明智

  • setsar=1:1 forces an aspect ratio of 1:1 and hence, the right resolution
  • -crf 12 as desired quality roughly results in the same file size as the original file created by iMovie, so it should be a safe bet bit rate-wise

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10-10 09:36