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• avfilter/af_sofalizer : fix crash when ir size is not aligned, usually when n_samples...

  4 mars 2016, par Paul B Mahol

  avfilter/af_sofalizer : fix crash when ir size is not aligned, usually when n_samples are not power of 2
  Signed-off-by : Paul B Mahol <onemda@gmail.com>
  

  • [DH] libavfilter/af_sofalizer.c

• lsws/ppc/yuv2rgb_altivec : Fix build in non-VSX environments

  10 octobre 2020, par Chip Kerchner

  lsws/ppc/yuv2rgb_altivec : Fix build in non-VSX environments
  Add inline function for vec_xl if VSX is not supported. vec_xl intrinsic
  
  is only available on POWER 7 or higher.
  Fixes ticket #8750.
  Signed-off-by : Andriy Gelman <andriy.gelman@gmail.com>
  

  • [DH] libswscale/ppc/yuv2rgb_altivec.c

• Google Lato Font Display discrepancies between platforms/software [closed]

  5 juin 2024, par CRAIG

  Using Google's Lato font with 400 weight, is giving me some inconsistent results between Photoshop/Web on MacOS and Linux Imagemagick & Linux ffmpeg.

  


  I have printed out some text on my linux server using the font using both imagemagick (v6.9.10-68) and ffmpeg's (v6.0) drawtext feature and in both cases, I get some extra space between the T and the e. (Image below)

  


  At first I was only testing ffmpeg and thought it was related to drawtext, but now that imagemagick is doing the same, I am thinking it may be somehow related to how the server is managing the font ?

  


  I did download the exact same font to test on my Mac and installed it, but I still get the original photoshop results I was getting before. So I don't think it is inherently the font unless I missed a step. I did completely uninstall the font and then install the downloaded one to be sure.

  


  However, the same word, font, font-size combo used in Photoshop and on the web does not produce the same space between the T and the e.

  


  Here is an image I put together showing the results :

  


  

  


  For reference, here is the imagemagick command :

  


  convert -size 900x900 xc:black -font /fonts/Lato:400.ttf -pointsize 261.6 -fill white -gravity center -annotate +0+0 'Text' testoutput.png

  


  And the ffmpeg command :

  


  /usr/local/bin/ffmpeg -f  lavfi  -i  color=c=black@0.0:s=953x953:r=30:d=5,format=rgba  -filter_complex  "drawtext=expansion=none:enable='between(t,0,5)':fontfile='/fonts/Lato\:400.ttf':fontcolor=0xffffffff:fontsize=294:text='Text':x=(w-text_w)/2+0:y=476.5-(max_glyph_a)+(294/2.8)"  -copyts  -threads  1  -c:v  png  -pix_fmt  rgba  -movflags  faststart  -r  30  -t  8  -y  testoutput.mov