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12th May 2005, 20:07 | #1 | Link |
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How to know the exact aspect ratio of a .ts stream?
Hi there!
If you play a .ts file in PowerDVD, it is shown in the right a.r. However, it doesn't tell you the exact ratio. I want to convert it to a xvid. But how do I know its exact a.r.? There must be some clue encoded in the .ts stream, because PowerDVD knows what a.r. to use... |
13th May 2005, 11:21 | #3 | Link |
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Thx
I loaded the file in ProjectX. After a short processing, it says: -> video basics: 1280*1088 @ 29.97fps @ 0.7031 (16:9) @ 65000000bps, vbvBuffer 488 What does the '0.7031 (16:9)' mean? 16:9 = 1.77, and 9:16=0.5625... 1 : 0.7031 = 1.422 ---> looks like the right a.r. |
13th May 2005, 20:55 | #5 | Link |
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I was wrong, AR is not 1 / 0.7031.
Comparing various AR's with the video that PowerDVD is showing, I think that the 16:9 ratio is the ratio of the final resolution. So if the width of the avi has to be 1024, the height should be 9/16 * 1024 = 576 This seems to give the right result, compared to PowerDVD. It is still not clear what the mysterious 0.7031 means though.. |
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