Fast moving video wall looks terrible after youtube upload

marcel-vossen wrote on 7/8/2020, 11:49 AM

Hi there

I've made a video that contains a fast scrolling videowall that I made in After Effects (rendered in AVI) before putting it in my Vegas project and rendering it in Magix AVC MP4 format. When I play the endresult on my PC it looks great, but after uploading it to youtube the videowall part is showing a lot of pixelation, like noise during the fast movement of the scrolling videowall.

Youtube recommends uploading in a higher bitrate so I tried re-rendering it in a Sony AVC with a higher bitrate (25.999.360) to see if that helps but it didn't.

Is there a way to render this in a way that youtube will not mess things up, or is this 'just the way things work'?

Marcel

 

PS: I'm not very familiar with AE and I use it only to render certain templates that are cool, but I noticed that the H.264 option is totally missing in the newer versions of AE when I render a project, actually the only usable option seems to be AVI uncompressed HUGE file output, what is that all about, does anybody know?

 

Comments

fred-w wrote on 7/8/2020, 12:31 PM

Try as many as codec/formats as practical. I would render just a short, like 5 sec., segment of the "trouble spot" for testing/upload. Also go to uncompressed or lossless formats, like Magic YUV https://www.magicyuv.com, there are others, do a search for lossless codecs, but MagicYUV is well regarded, here and elsewhere.
 

james-ollick wrote on 7/8/2020, 1:42 PM

What was the frames per second setting? Did you try 60?

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marcel-vossen wrote on 7/8/2020, 1:53 PM

Try as many as codec/formats as practical. I would render just a short, like 5 sec., segment of the "trouble spot" for testing/upload. Also go to uncompressed or lossless formats, like Magic YUV https://www.magicyuv.com, there are others, do a search for lossless codecs, but MagicYUV is well regarded, here and elsewhere.
 

Thanks, although I still think it's strange that the clip looks great when I play it with WinDVD locally.

fred-w wrote on 7/8/2020, 2:08 PM

Try as many as codec/formats as practical. I would render just a short, like 5 sec., segment of the "trouble spot" for testing/upload. Also go to uncompressed or lossless formats, like Magic YUV https://www.magicyuv.com, there are others, do a search for lossless codecs, but MagicYUV is well regarded, here and elsewhere.
 

Thanks, although I still think it's strange that the clip looks great when I play it with WinDVD locally.

Youtube ads, pretty obviously, another compression to what is already a compressed version of your video. (and a wall of video is it's own "compressed" version) It works well for some things, less well for others.

Musicvid wrote on 7/8/2020, 2:23 PM

"Fast moving video" is the only thing to consider here. Your upload quality, unless already suboptimal, will not change the YT output even a little bit.

Unfortunately, there are only two alternatives -- reduce the motion or move it to Vimeo. The tail does not wag the YouTube dog.

You can try a higher resolution upload, which "may" mask some of the garbage. It is far from a fix

marcel-vossen wrote on 7/8/2020, 2:27 PM

What was the frames per second setting? Did you try 60?

We use 50 in europe, you think that makes a difference? I did notice that the rendered videowall in AE was 25, so now I'm rerendering in 50, it takes ages.

 

Howard-Vigorita wrote on 7/8/2020, 6:43 PM

You could try rendering at 1440p which will trick YouTube into using its vp9 codec to transcode... I don't think that'll get them to also keep a higher frame rate but it's worth a shot... I would render a snippit and upload it as a private test first.

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lenard-p wrote on 7/8/2020, 9:42 PM

The higher frame rate sounds like an idea to try, but you don't want to create any new unique frames you want to frame double. This idea works on the premise that maybe youtube increases the default bitrate for 50fps as compared to 25fps, and it's not only related to the constant quality encoding.

I know this works with Twitch with it's transcoders but don't know about youtube. If it's a pure constant quality encode I dont' think it will help.