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| Unofficial VirtualDub Support Forums > Testing / Bug Reports > How To Make Vd Use Sar/par And Dar Informations |
| Posted by: rmanal Jan 15 2012, 10:38 AM |
| Hello, I have a DV file with size 720x480 but with SAR: 3/2, PAR: 8/9, DAR=PAR*SAR:4/3. But when I open it in VD it displays a 720*480 file with square pixel: so how to tell VD to use SAR and PAR informations instead of resizing the file with another method inducing a degradation of the quality? Thank you Rmanal |
| Posted by: stephanV Jan 15 2012, 10:41 AM |
| You can't. Signalling DAR/PAR is up to the codec. You will have to set this manually when you export in the codec settings.. |
| Posted by: rmanal Jan 15 2012, 05:12 PM |
| OK thank you. It could be an improvement as this information is essential in the visualization of the video. Nevertheless I don't how to set it manually: could you give me an exemple please, with one codec? Thank you |
| Posted by: stephanV Jan 15 2012, 07:24 PM | ||||
It is not possible to make it because VirtualDub does not control codec settings.
Depends on what codec you are using. |
| Posted by: rmanal Jan 16 2012, 06:30 PM |
| For codec exemple, DIVX? |
| Posted by: stephanV Jan 16 2012, 08:26 PM |
| Video Tab > Format Out |
| Posted by: rmanal Jan 18 2012, 07:35 AM |
| OK but in a DV file we have SAR= 3/2, PAR= 8/9. And in this video tab we can only set a PAR. So how to also set the SAR in order to retrieve a correct 4/3 file format? Thank you |
| Posted by: stephanV Jan 18 2012, 05:27 PM |
| What you mean with SAR is just horizontal resolution divided by the vertical resolution. There is no reason to explicitly set that. |
| Posted by: rmanal Jan 21 2012, 10:22 AM |
| SAR is the stockage aspect ratio, in the case of DV it is equal to 1.5: if you don't take it into account how to retrieve a 4/3 ratio? |
| Posted by: stephanV Jan 21 2012, 01:45 PM |
| That value isn't storedin DV either. Again, it's horizontal devided by vertical resolution. (720/480=1.5) |
| Posted by: rmanal Jan 21 2012, 07:01 PM |
| OK I have said a stupid thing. Thank you for your help. |