Recherche avancée

Sur d’autres sites (10097)

• ffmpeg drawtext support for Tibetan fonts

  19 juin 2020, par A-Circle Zhang

  I'm trying to use ffmpeg drawtext filter to render Tibetan text to videos. But some characters aren't rendered correctly.

  



  for example :

  



  


  སྤྱི་སྟེགས

  


  



  Expected render output

  



  some characters which is.. vertically too long, are not rendered correctly :

  



  Actual render output

  



  and this is my command line for generating the output :

  



  ffmpeg -i input.mp4 -filter_complex "drawtext=fontsize=80:fontcolor=black:fontfile=himalaya.ttf:shadowx=1:shadowy=1:text='སྤྱི་སྟེགས':x=0:y=0" -c:v libx264 -b:v 400k -c:a copy output.mp4


  



  The font himalaya.ttf (Microsoft Himalaya) is the default built-in font for Tibetan on Windows 10. (See https://docs.microsoft.com/en-us/typography/font-list/microsoft-himalaya )

  



  I tried text_shaping=1 and text_shaping=0, neither one is working.

  



  I've also tried other Tibetan fonts, problem is the same.

  



  But all of those fonts are rendered correctly in other places such as web browser.

  


• fate : Make sure a corner-case for ASF is covered

  14 août 2015, par Alexandra Hájková

  fate : Make sure a corner-case for ASF is covered
  Test the demuxer for the case when the replicated data length in
  
  a sample is 0.
  Sample-ID : https://samples.libav.org/mplayer-bugs/bug821/bug821-2.asf
  Signed-off-by : Luca Barbato <lu_zero@gentoo.org>
  

  • [DBH] tests/fate/microsoft.mak
  • [DBH] tests/ref/fate/asf-repldata

• Ffmpeg : switching audio tracks in cartoon for language learning

  18 novembre 2020, par almachuar
  

  1. Need to convert multiple-(audio)-language-video to single-audio-stream-video where 2 languages alternate repeatedly.
(10sec Lang2) + (15sec Lang3) + (10sec Lang2) + (15sec Lang3) + ... and so on till the end.
I assume it should be done whith piping in and on-the-fly changing audio streams by scripting.

  


  


  I've done audio switching task (with scripting) by lively changing audio languages in video player but need better and crossplatform solution for little kid - preprepared video.

  


  

  2. Need to adjust loudness on one of the input audio streams, to match overall voice loudness. Level of adjustment determined by myself not automaticly.