如何获得具有Alpha透明度的网络视频以在移动野生动物园中播放？
我正在尝试添加a 具有Alpha透明度的Web视频到网站上。该视频以.WEBM格式为.WEBM，因此没有问题。在使用最新的iOS在Safari上进行检查时，我意识到Apple不支持WebM。研究了一段时间后，我一直陷入死胡同。
我尝试将其转换为HEVC编码的视频，但仍然不起作用。我尝试使用Premier重新出口apple ProRes 4444 xq .mov的视频文件，但这也不起作用。
我的代码只是标准HTML5，第二个视频源都是我尝试过的，并且无法在Safari上工作。
<video width="600" autoplay loop muted playsinline>
<source src="movie.webm" type="video/webm">
<source src="movie_HEVC.mp4" type='video/mp4; codecs="hvc1"'>
<source src="movie_ProRes4444xq.mov" type="video/quicktime">
</video>
此
谢谢， 追赶
I am trying to add a web video that has alpha transparency to a website. The video is in .WebM format so no problem there. When checking it out on safari with the latest iOS I realized that Apple doesn't support WebM. After researching it a bit I keep running into dead ends.
I tried converting it into an HEVC encoded video but it still doesn't work. I tried re-exporting the video file from Premier with the format Apple ProRes 4444 XQ .mov and that didn't work either.
My code is just standard HTML5, with the second 2 video sources being both that I tried and could not get to work on Safari.
<video width="600" autoplay loop muted playsinline>
<source src="movie.webm" type="video/webm">
<source src="movie_HEVC.mp4" type='video/mp4; codecs="hvc1"'>
<source src="movie_ProRes4444xq.mov" type="video/quicktime">
</video>
This CSS Tricks article shows a great example of what I am trying to accomplish. It even has a great guide on how to accomplish this task. However, one of the main steps on the guide requires a Mac for it's video encoding ability. I am on Windows. Is there a workaround or any other ways of achieving this?
Thanks,
Chase
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我也在窗户上，所以我无法确认工作的答案，但是尝试...
（1）通过仅使用iOS的一个源（必须是MOV或MP4）用“ HEVC”作为编解码器。
（2）在Windows上，尝试使用ffmpeg to 编码Pro-Res 444视频。
I am on Windows too so I cannot confirm a working Answer, but try...
(1) Test by using only one source for iOS (it must be either MOV or MP4) with "hevc" as the codec.
(2) On Windows, try using FFmpeg to encode Pro-Res 444 video.