Body: <p>I'm working on a video incorporating Flash animation into Premiere Pro to then upload to YouTube. When I upload it to YouTube however the diagonal lines are terribly distorted:</p>
  
  <p>Youtube:</p>
  
  <p><img src="https://i.sstatic.net/WtUYx.jpg" alt="laser on youtube"></p>
  
  <p>Flash:</p>
  
  <p><img src="https://i.sstatic.net/MWtRZ.jpg" alt="laser on flash"></p>
  
  <p>What should I be checking for either in Flash or Premiere to ensure those lines are crisp when published on YouTube?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-06-10T03:42:57.577Z
Comments.Text: What you're probably seeing there is an artefact of chroma subsampling. Youtube videos are usually compressed as h.264 with 4:2:0 subsampling. What this means is that colour is sampled at a quarter of the resolution of brightness. A workaround would be to use a less saturated red.
Comments.UserDisplayName: stib
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-06-10T16:13:30.660Z
Comments.Text: @stib using HSL in Flash I lowered Saturation to 80% on the red, it helped a decent amount. Might try lowering it a bit more to find a sweet spot. If you want to leave that as an answer then I'll mark it correct.
Comments.UserDisplayName: Ryan
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-06-10T16:26:55.353Z
Comments.Text: Lowering it to 60% while not as vibrant as I might like completely fixes the distortion. Thanks!
Comments.UserDisplayName: Ryan
Tags: <youtube><animation-rendering><flash>
Title: How to get a better quality diagonal line from Flash to YouTube?
UserDisplayName: Ryan
ThreadText: # How to get a better quality diagonal line from Flash to YouTube?
  
  (Asked by: username_0 on 2015-06-08)
  
  I'm working on a video incorporating Flash animation into Premiere Pro to then upload to YouTube. When I upload it to YouTube however the diagonal lines are terribly distorted:
  
  Youtube:
  
  ![laser on youtube](https://i.sstatic.net/WtUYx.jpg)
  
  Flash:
  
  ![laser on flash](https://i.sstatic.net/MWtRZ.jpg)
  
  What should I be checking for either in Flash or Premiere to ensure those lines are crisp when published on YouTube?
  
  **Tags:** youtube, animation-rendering, flash
  
  > **Comments:**
  > **username_1**: What you're probably seeing there is an artefact of chroma subsampling. Youtube videos are usually compressed as h.264 with 4:2:0 subsampling. What this means is that colour is sampled at a quarter of the resolution of brightness. A workaround would be to use a less saturated red.  
  > **username_0**: @username_1 using HSL in Flash I lowered Saturation to 80% on the red, it helped a decent amount. Might try lowering it a bit more to find a sweet spot. If you want to leave that as an answer then I'll mark it correct.  
  > **username_0**: Lowering it to 60% while not as vibrant as I might like completely fixes the distortion. Thanks!  
  
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  ## 0 answers
  
  