[FFmpeg-user] How to avoid blurred text when using drawtext filter?

[Mike Scheutzow]

pgoldweic wrote:
> When I run ffmpeg with the drawtext filter, I get the desired result (a title
> on top of a movie) in a small size movie, but I get blurred text when I type
> the same command using a larger input movie.  What causes this? How can I
> change my command to avoid the blurred text? 
> For specific details, the command I'm using is:
> ffmpeg -i mymovie.mp4 -vcodec libx264 -acodec copy -vf
> "drawtext=fontfile=/usr/share/fonts/bitstream-vera/VeraSe.ttf:fontsize=30:x=50:y=50:fontcolor=white:text='this
> is a title'" mytitledmovie.mp4


> frame=  167 fps=  9 q=31.0 Lsize=      31kB time=5.51 bitrate=  45.7kbits/s    

The encoder used 45 kbits/sec, which is way too low for 1920x1080 to 
look good.

The problem is that you have not specified a quality level or a bit rate 
for the encoder to use.

To fix it, add the following just after '-vcodec libx264'

-crf 23


Mike Scheutzow