bytedeco/javacv

drawtext issue when apply hindi language font file or other language font file.

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#1,635 opened on Apr 26, 2021

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Description

We are trying to use ffmpeg drawtext to support hindi fonts. but some characters are not rendering properly.

Used Hindi Language Font file :- https://fonts.google.com/specimen/Khula

ffmpeg -i myvideo.mp4 -i image.png -filter_complex [0:v][1:v]overlay=5:5,drawtext=text=hindi.txt:fontfile=Khula-Regular.ttf:fontcolor=orange@1.0:fontsize=30:x=30:y=200 -c:a copy output.mp4

Input string :- जिन्दगी सिर्फ हकीक़त है हकीक़त समझो,

But output renders as .

hindi

I want some perfect solution to apply assets font on FFmpeg.

Thank you in Advance.

Contributor guide

Research direction
Investigate how FFmpeg's drawtext filter handles complex scripts like Hindi (Devanagari). Check if the font file supports the required characters and if text shaping (e.g., HarfBuzz) is enabled. Consider using a font with full Unicode coverage or adjusting the drawtext options for text layout.
Tech stack
java
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
FFmpegfont rendering
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50