<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=us-ascii"> <META content="MSHTML 6.00.6000.16735" name=GENERATOR></HEAD> <BODY> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>I want to scale video to a fixed height, while keeping the image proportions.</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>I do not see this capability in videoscale.  If I set only one property, it is the only one scaled,</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>and the property ranges do not have the "overloaded" values of the scaling in mplayer.</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>I can either do the "overload", or something I think is cleaner, which is add another property,</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>(default to "off", to preserve the current behavior), called somthing like "aspect" (suggestions</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>welcome).  This property would enforce proportional scaling, within the limitations of the</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>scaling </FONT></SPAN><SPAN class=338375302-12112008><FONT face=Arial size=2>algorithms.</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2></FONT></SPAN> </DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>There is the question of priority (horizontal or vertical) when aspect is preserved, but I think</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>that could be handled by using a "best-fit".  Neither result should exceed the "to" size,</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>of course, and whichever dimension loses more, proportionally, would be given priority.  For</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>example, if width would lose 10% if proportionally scaled to height, while height would lose</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>8% if scaled proportionally to width, the the image would be scaled to width.</FONT></SPAN><SPAN class=338375302-12112008><FONT face=Arial size=2>  Some of us</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>might need more control than that, so "aspect" could be multi-valued, such as "off", </FONT></SPAN><SPAN class=338375302-12112008><FONT face=Arial size=2>"on"</FONT></SPAN></DIV> <DIV><SPAN class=338375302-12112008><FONT face=Arial size=2>(best-fit), </FONT></SPAN><SPAN class=338375302-12112008><FONT face=Arial size=2>"x" (or "width"), and "y" (or "height").</FONT></SPAN></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV></BODY></HTML>