Display Aspect Ratio: Difference between revisions
Jump to navigation
Jump to search
Created page with "There is a difference between Sample Aspect Ratio (SAR) and Display Aspect Ratio (DAR). Display Aspect Ratio (DAR) - a value in the header. Sample Aspect Ratio (SAR) - count..." |
mNo edit summary |
||
| Line 1: | Line 1: | ||
There is a difference between Sample Aspect Ratio (SAR) and Display Aspect Ratio (DAR). | There is a difference between Sample Aspect Ratio (SAR) and Display Aspect Ratio (DAR). | ||
Sample Aspect Ratio (SAR) - count of pixels horizontal ratio to vertical. *** ''the Pixel Aspect Ratio (PAR)'' | |||
Display Aspect Ratio (DAR) - a value in the file that tells the video player how to display the video. | |||
To scale the image and change SAR (while transcoding), try: | To scale the image and change SAR (while transcoding), try: | ||
| Line 12: | Line 12: | ||
ffmpeg -i <INPUT_FILE> -aspect 720:540 -c copy [OUTPUT_FILE] | ffmpeg -i <INPUT_FILE> -aspect 720:540 -c copy [OUTPUT_FILE] | ||
== *** SAR , DAR , PAR == | |||
We discussed the Sample Aspect Ratio or SAR. Lets add more confusion. Other experts describe SAR as the Storage Aspect Ratio and introduce a third element to the discussion called the Pixel Aspect Ratio (PAR). | |||
Revision as of 06:57, 16 June 2019
There is a difference between Sample Aspect Ratio (SAR) and Display Aspect Ratio (DAR).
Sample Aspect Ratio (SAR) - count of pixels horizontal ratio to vertical. *** the Pixel Aspect Ratio (PAR)
Display Aspect Ratio (DAR) - a value in the file that tells the video player how to display the video.
To scale the image and change SAR (while transcoding), try:
ffmpeg -i <INPUT_FILE> -vf scale=720:540 -c:v <Video_Codec> <OUTPUT_FILE>
On the other hand, if you just want to change the metadata flag and adjust the DAR, you will be able to stream copy the video. To do this, try:
ffmpeg -i <INPUT_FILE> -aspect 720:540 -c copy [OUTPUT_FILE]
*** SAR , DAR , PAR
We discussed the Sample Aspect Ratio or SAR. Lets add more confusion. Other experts describe SAR as the Storage Aspect Ratio and introduce a third element to the discussion called the Pixel Aspect Ratio (PAR).