diff options
Diffstat (limited to 'DOCS')
| -rw-r--r-- | DOCS/xml/en/mencoder.xml | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/DOCS/xml/en/mencoder.xml b/DOCS/xml/en/mencoder.xml index 6224fb4935..00e1376cac 100644 --- a/DOCS/xml/en/mencoder.xml +++ b/DOCS/xml/en/mencoder.xml @@ -1185,6 +1185,9 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37, Wc and Hc are the width and height of the cropped video, </para></listitem> <listitem><para> + ARa is the displayed aspect ratio, which usually is 4/3 or 16/9, +</para></listitem> +<listitem><para> PRdvd is the pixel ratio of the DVD which is equal to 1.25=(720/576) for PAL DVDs and 1.5=(720/480) for NTSC DVDs, </para></listitem> @@ -1195,6 +1198,7 @@ vcodec=mpeg2video:intra_matrix=8,9,12,22,26,27,29,34,9,10,14,26,27,29,34,37, Then, you can compute the X and Y resolution, according to a certain Compression Quality (CQ) factor: <systemitem>ResY = INT(SQRT( 1000*Bitrate/25/ARc/CQ )/16) * 16</systemitem> + and <systemitem>ResX = INT( ResY * ARc / 16) * 16</systemitem> </para> |