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• 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

• I'm trying to merge videos using fluent-ffmpeg, but some times it merges videos , but whenever we tries to merge videos second time it shows error

  9 janvier 2024, par Asif Mujawar

  const express =require('express')
const app = express()
const ffmpeg = require('fluent-ffmpeg')
const ffmpegPath = require('@ffmpeg-installer/ffmpeg')
const ffprobe = require('@ffprobe-installer/ffprobe')

const first = './videos/first.mp4'
const second = './videos/second.mp4'
const third = './videos/third.mp4'
const fourth = './videos/fourth.mp4'

ffmpeg.setFfprobePath(ffprobe.path)
ffmpeg.setFfmpegPath(ffmpegPath.path)

app.use(express.json())

app.use("/",(req,res)=>{
    res.send("hello")

    ffmpeg()
    .input(first)
    .input(second)
 
    .on('end', function() {
      console.log('files have been merged succesfully');
    })
    .on('error', function(err) {
      console.log('an error happened: ' + err.message);
    })
    .mergeToFile("final.mp4")
  })
  

app.listen(8800,()=>{
    console.log("backend is running 8800")
})



  


  but it shows error whenever we try to merge videos second time

  


  an error happened : ffmpeg exited with code 1 : Cannot find a matching stream for unlabeled input pad 3 on filter Parsed_concat_0

  


  an error happened : ffmpeg exited with code 1 : Cannot find a matching stream for unlabeled input pad 3 on filter Parsed_concat_0