I dragged an Xvid encoded Avi video with resolution 704*384 onto Avidemux und wanted to resize it.
I activated Filter "swsResize". Is this the correct/only Resize Filter or are there some others/alternatives?
I checked "Lock aspect ratio" with from=16:9 to=16:9
and set the width to 624. Much to my surprise the Height is automatically adjusted by Avidemux to 340.
When I am right the the correct Height for a 16:9 video is 352 and NOT 340.
Why does Avidemux adjust the wrong Height?
I can set Height to 352 only when I uncheck "Lock Aspect Ratio"
So I think this is a bug.
Peter
If your card support it:
nvidia: Transform: vdpau: Resize
OpenGL : OpenGL Resize
Don't have access to a source video 704*384.
Tested in Avidemux v2.6.0 (r8349) with 1920x1080 (16:9):
Quote from: Jan Gruuthuse on December 31, 2012, 09:36:58 AM
If your card support it:
nvidia: Transform: vdpau: Resize
OpenGL : OpenGL Resize
How do you add these options, or where are they.
I would have thought you mean in filters, but there is no nvidia option and the opengl option is empty.
card (video card) : http://en.wikipedia.org/wiki/Nvidia_PureVideo (nvidia = brand of GPU)
If OpenGL drivers installed for your video card:
Edit -> Preferences -> [Video] ->Video Display: VDPAU or OpenGL, if you get crashes with OpenGL select original setting.
[v] Decode video using VDPAU
[v] enable openGL support (if this option is available, select it, even if you don't have Video Display: OpenGL working.
QuoteHow do you add these options, or where are they.
VDPAU = Video Decode and Presentation API for Unix ââ,¬â€œ so it's no option for Windows user, isn't it... (and yep, this is the Windows section of the forum).
Your source material does not have square pixel
i.e. it is 704x480 but displayed at 848x480 or similar if it is 16:9
So either you resize it to 848*480 before encoding
or if it is mkv, you can force display to being 848 letting the video as it is
(just copy audio & video, configure button near container)
The player will resize it on playback
Quote from: Jan Gruuthuse on December 31, 2012, 05:51:53 PM
If OpenGL drivers installed for your video card:
Edit -> Preferences -> [Video] ->Video Display: VDPAU or OpenGL, if you get crashes with OpenGL select original setting.
Thank you, but:
How do I find out if OpenGL drivers are installed (and used)? I run Avidemux under 64bit Win7
with no video card but using the embedded graphic GPU of the Intel core i5 CPU.
When I go to
Edit -> Preferences -> [Video] ->Video Display
then currently "OpenGL" is selected.
But when I go to Filters-->OpenGL
then there is NO available filter.
So how else do I select OpenGL resize filter?
Peter