Answers.Body: <p>I think you might be confusing pixel aspect ratios with image aspect ratios.</p>
  
  <p>I suspect you want square pixels - ie a pixel aspect ratio (PAR) of 1:1</p>
  
  <p>Most HD videos are 1920x1080, which is an image aspect radio of 1.778 to 1.
  Most HD videos have a pixel aspect ratio of 1:1.</p>
  
  <p>Is your desired image size actually 1280x720 ?  I suspect it is, rather than 720x1280 (720 horizontal x 1280 vertical).</p>
  
  <p>Non-square pixels are only usually used for SD widescreen videos - more of a legacy requirement these days.  Unless maybe you're designing for a specific custom display like a big advertising screen or something like that?</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-29T22:34:05.150Z
Answers.Text: I'm sorry but all i need the video to be 1920x1080 because that is the size that fits perfectly on youtube and also it is the size that my DSLR films in, In the past i have been able to easily render as mp4 with no video quality problem or resizing, i cant help thinking I've accidentally done something with my settings to cause this error.
Answers.UserDisplayName: Screen Cannon
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-30T08:44:08.503Z
Answers.Text: what camera are exporting from - what are the specifications of your original footage?
Answers.UserDisplayName: tomh
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-30T14:11:08.497Z
Answers.Text: 25 fps   1920x1080  1080p       Cannon EOS 1200d
Answers.UserDisplayName: Screen Cannon
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-31T10:40:15.407Z
Answers.Text: never mind sorry you were right!
Answers.UserDisplayName: Screen Cannon
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-29T14:32:14.750Z
Answers.LastActivityDate: 2016-07-31T06:29:44.770Z
Answers.LastEditDate: 2016-07-31T06:29:44.770Z
Answers.UserDisplayName: tomh
Body: <p>On after effects I have been having a problem with rendering as when i try to render a video with a regular 3.2 PAR (Pixel aspect ratio) after effects resizes it from MP4's 1920x1080 to 720x1080 and this is really bad for the video quality, i have tried changing the PAR to 5.1 and this does stop the resizing but it makes my video quality terrible, Please help me if you can.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-07-29T13:20:21.100Z
Comments.Text: Why would you want to render with a PAR of 5:1? Of course it's going to look dodgy, you're reducing the horizontal resolution 80%. What exactly are you trying to achieve?
Comments.UserDisplayName: stib
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2016-07-29T13:48:41.263Z
Comments.Text: because i heard it would help in this question with a simalar problem http://video.stackexchange.com/questions/7098/adobe-after-effects-mp4-export-issue?newreg=c438d6fff6d44f3a865a522d353e5190
Comments.UserDisplayName: Screen Cannon
Tags: <after-effects>
Title: After effects MP4 render problem
UserDisplayName: Screen Cannon
ThreadText: # After effects MP4 render problem
  
  (Asked by: username_0 on 2016-07-29)
  
  On after effects I have been having a problem with rendering as when i try to render a video with a regular 3.2 PAR (Pixel aspect ratio) after effects resizes it from MP4's 1920x1080 to 720x1080 and this is really bad for the video quality, i have tried changing the PAR to 5.1 and this does stop the resizing but it makes my video quality terrible, Please help me if you can.
  
  **Tags:** after-effects
  
  > **Comments:**
  > **username_1**: Why would you want to render with a PAR of 5:1? Of course it's going to look dodgy, you're reducing the horizontal resolution 80%. What exactly are you trying to achieve?  
  > **username_0**: because i heard it would help in this question with a simalar problem http://video.stackexchange.com/questions/7098/adobe-after-effects-mp4-export-issue?newreg=c438d6fff6d44f3a865a522d353e5190  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2016-07-29. Score: 1 | Accepted answer
  
  I think you might be confusing pixel aspect ratios with image aspect ratios.
  
  I suspect you want square pixels - ie a pixel aspect ratio (PAR) of 1:1
  
  Most HD videos are 1920x1080, which is an image aspect radio of 1.778 to 1.
  Most HD videos have a pixel aspect ratio of 1:1.
  
  Is your desired image size actually 1280x720 ? I suspect it is, rather than 720x1280 (720 horizontal x 1280 vertical).
  
  Non-square pixels are only usually used for SD widescreen videos - more of a legacy requirement these days. Unless maybe you're designing for a specific custom display like a big advertising username_0 or something like that?
  
  > **Comments:**
  > **username_0**: I'm sorry but all i need the video to be 1920x1080 because that is the size that fits perfectly on youtube and also it is the size that my DSLR films in, In the past i have been able to easily render as mp4 with no video quality problem or resizing, i cant help thinking I've accidentally done something with my settings to cause this error.  
  > **username_2**: what camera are exporting from - what are the specifications of your original footage?  
  > **username_0**: 25 fps   1920x1080  1080p       username_0 EOS 1200d  
  > **username_0**: never mind sorry you were right!  
  
  ---
  
  