[FFmpeg-trac] #4082(ffmpeg:new): The scale filter does not actually change the height and width.
FFmpeg
trac at avcodec.org
Wed Nov 5 01:57:41 CET 2014
#4082: The scale filter does not actually change the height and width.
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Reporter: muruganandh | Type: defect
Status: new | Priority: critical
Component: ffmpeg | Version:
Keywords: scale | unspecified
filter | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
As per this document -
https://trac.ffmpeg.org/wiki/Scaling%20%28resizing%29%20with%20ffmpeg
-vf scale=320:240 should covert any video to 320 by 240 disregarding the
aspect ratio of the source
How to reproduce:
{{{
% ffmpeg -i input -vf scale=320:240 output
ffmpeg version ffmpeg version 2.4.3-tessus
built on Nov 3 2014 23:01:10 with Apple LLVM version 6.0 (clang-600.0.54)
(based on LLVM 3.5svn)
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
Steps :
1. Use any source video - i used 1280 by 720 Video.
2. use this command -i input.mp4 -vf scale=100:100 output.mp4
Expected : A Video of size 100px width and 100px height
(https://trac.ffmpeg.org/wiki/Scaling%20%28resizing%29%20with%20ffmpeg)
Actual : You get a video of 177 by 100 (ffprobe will say the video as 100
by 100 but quicktime player or VLC player will play by aspect ratio
maintained). The resulting video is actually 117 by 100 - Get Info from
MAC will show the real value.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4082>
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