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How to enable libass on Linux?

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3

I tried to enable libass for ffmpeg with this --enable-libass in command but it didn't recognise the command.

Does anyone know how to enable libass on Linux?

linux ffmpeg

share|improve this question

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

asked Feb 20 '14 at 4:32

ceacea

69872442

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  what version of linux? It is possible libass is not installed on your system.
  
  – mkc
  Feb 20 '14 at 4:59
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  2.6.32-358.2.1.el6.i686
  
  – cea
  Feb 20 '14 at 5:08
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What distro is what we should've asked.
  
  – slm♦
  Feb 20 '14 at 5:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i386 GNU/Linux if that is what you mean.
  
  – cea
  Feb 20 '14 at 5:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  cea: please run the command "cat /etc/issue" on your terminal and show its output here.
  
  – Aquarius_Girl
  Feb 20 '14 at 6:30
  

  
  
  
  

 | 
show 1 more comment

3

I tried to enable libass for ffmpeg with this --enable-libass in command but it didn't recognise the command.

Does anyone know how to enable libass on Linux?

linux ffmpeg

share|improve this question

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

asked Feb 20 '14 at 4:32

ceacea

69872442

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  what version of linux? It is possible libass is not installed on your system.
  
  – mkc
  Feb 20 '14 at 4:59
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  2.6.32-358.2.1.el6.i686
  
  – cea
  Feb 20 '14 at 5:08
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What distro is what we should've asked.
  
  – slm♦
  Feb 20 '14 at 5:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i386 GNU/Linux if that is what you mean.
  
  – cea
  Feb 20 '14 at 5:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  cea: please run the command "cat /etc/issue" on your terminal and show its output here.
  
  – Aquarius_Girl
  Feb 20 '14 at 6:30
  

  
  
  
  

 | 
show 1 more comment

I tried to enable libass for ffmpeg with this --enable-libass in command but it didn't recognise the command.

Does anyone know how to enable libass on Linux?

linux ffmpeg

share|improve this question

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

asked Feb 20 '14 at 4:32

ceacea

69872442

share|improve this question

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

asked Feb 20 '14 at 4:32

ceacea

69872442

share|improve this question

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

asked Feb 20 '14 at 4:32

ceacea

69872442

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

edited Feb 20 '14 at 6:34

Aquarius_Girl

64042141

asked Feb 20 '14 at 4:32

ceacea

69872442

asked Feb 20 '14 at 4:32

ceacea

69872442

3 Answers
3

active

oldest

votes

3

First you need to make sure that your particular version of ffmpeg was built with and supports that switch. You'll also likely need to make sure that the library libass is installed as well.

You don't specify your Linux distro but I did notice that libass is available in my stock Fedora 19 repository so it's trivial to install.

$ sudo yum install libass

Now back to ffmpeg's support of libass. You can confirm how it was built by simply running it without any arguments.

$ ~/ffmpeg |& grep libass
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx

So the version that I have, does include this support, --enable-libass. If your version of ffmpeg doesn't support it you can simply download the static build of it from the FFmpeg website.

• http://ffmpeg.gusari.org/static/

share|improve this answer

edited yesterday

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It says nothing to do when tried simple yum install so that means it must be installed? I did download the static build.
  
  – cea
  Feb 20 '14 at 5:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @cea - yes, you can confirm with this command too: rpm -aq libass.
  
  – slm♦
  Feb 20 '14 at 5:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you, it says libass-0.10.0-3.el6.i686 so I wonder why I am getting font config not found in output. That is the reason I'm trying to enable.
  
  – cea
  Feb 20 '14 at 5:14
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @cea - see this FFmpeg ticket: trac.ffmpeg.org/ticket/1688
  
  – slm♦
  Feb 20 '14 at 5:18
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ok thank you, no-one was ever able to give him an answer "closed defect (invalid)" what ever that means, anyway I will have a think on it.
  
  – cea
  Feb 20 '14 at 6:24
  

  
  
  
  

add a comment | 

4

On Ubuntu or Mint:

sudo apt-get install libass-dev

share|improve this answer

edited Mar 5 '15 at 2:23

answered Jan 9 '15 at 5:59

TarikTarik

1414

add a comment | 

0

recompile ffmpeg with:

./configure --enable-libass

Then

make
sudo make install

Then check the new ffmpeg without arguments:

ffmpeg

Mine says "libass" is in the new config.

Then, to convert videos I use:

ffmpeg -i input.avi -vf "ass=subs.ass" out.avi

To obtain the subtitles in .ass from .srt I use:

ffmpeg -i subs.srt subs.ass

Good luck!

share|improve this answer

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186

add a comment | 

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3

First you need to make sure that your particular version of ffmpeg was built with and supports that switch. You'll also likely need to make sure that the library libass is installed as well.

You don't specify your Linux distro but I did notice that libass is available in my stock Fedora 19 repository so it's trivial to install.

$ sudo yum install libass

Now back to ffmpeg's support of libass. You can confirm how it was built by simply running it without any arguments.

$ ~/ffmpeg |& grep libass
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx

So the version that I have, does include this support, --enable-libass. If your version of ffmpeg doesn't support it you can simply download the static build of it from the FFmpeg website.

• http://ffmpeg.gusari.org/static/

share|improve this answer

edited yesterday

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It says nothing to do when tried simple yum install so that means it must be installed? I did download the static build.
  
  – cea
  Feb 20 '14 at 5:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @cea - yes, you can confirm with this command too: rpm -aq libass.
  
  – slm♦
  Feb 20 '14 at 5:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you, it says libass-0.10.0-3.el6.i686 so I wonder why I am getting font config not found in output. That is the reason I'm trying to enable.
  
  – cea
  Feb 20 '14 at 5:14
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @cea - see this FFmpeg ticket: trac.ffmpeg.org/ticket/1688
  
  – slm♦
  Feb 20 '14 at 5:18
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ok thank you, no-one was ever able to give him an answer "closed defect (invalid)" what ever that means, anyway I will have a think on it.
  
  – cea
  Feb 20 '14 at 6:24
  

  
  
  
  

add a comment | 

3

First you need to make sure that your particular version of ffmpeg was built with and supports that switch. You'll also likely need to make sure that the library libass is installed as well.

You don't specify your Linux distro but I did notice that libass is available in my stock Fedora 19 repository so it's trivial to install.

$ sudo yum install libass

Now back to ffmpeg's support of libass. You can confirm how it was built by simply running it without any arguments.

$ ~/ffmpeg |& grep libass
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx

So the version that I have, does include this support, --enable-libass. If your version of ffmpeg doesn't support it you can simply download the static build of it from the FFmpeg website.

• http://ffmpeg.gusari.org/static/

share|improve this answer

edited yesterday

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It says nothing to do when tried simple yum install so that means it must be installed? I did download the static build.
  
  – cea
  Feb 20 '14 at 5:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @cea - yes, you can confirm with this command too: rpm -aq libass.
  
  – slm♦
  Feb 20 '14 at 5:10
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you, it says libass-0.10.0-3.el6.i686 so I wonder why I am getting font config not found in output. That is the reason I'm trying to enable.
  
  – cea
  Feb 20 '14 at 5:14
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @cea - see this FFmpeg ticket: trac.ffmpeg.org/ticket/1688
  
  – slm♦
  Feb 20 '14 at 5:18
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  ok thank you, no-one was ever able to give him an answer "closed defect (invalid)" what ever that means, anyway I will have a think on it.
  
  – cea
  Feb 20 '14 at 6:24
  

  
  
  
  

add a comment | 

First you need to make sure that your particular version of ffmpeg was built with and supports that switch. You'll also likely need to make sure that the library libass is installed as well.

You don't specify your Linux distro but I did notice that libass is available in my stock Fedora 19 repository so it's trivial to install.

$ sudo yum install libass

Now back to ffmpeg's support of libass. You can confirm how it was built by simply running it without any arguments.

$ ~/ffmpeg |& grep libass
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx

So the version that I have, does include this support, --enable-libass. If your version of ffmpeg doesn't support it you can simply download the static build of it from the FFmpeg website.

• http://ffmpeg.gusari.org/static/

share|improve this answer

edited yesterday

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

$ sudo yum install libass

share|improve this answer

edited yesterday

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

answered Feb 20 '14 at 5:02

slm♦slm

254k71538687

4

On Ubuntu or Mint:

sudo apt-get install libass-dev

share|improve this answer

edited Mar 5 '15 at 2:23

answered Jan 9 '15 at 5:59

TarikTarik

1414

add a comment | 

4

On Ubuntu or Mint:

sudo apt-get install libass-dev

share|improve this answer

edited Mar 5 '15 at 2:23

answered Jan 9 '15 at 5:59

TarikTarik

1414

add a comment | 

On Ubuntu or Mint:

sudo apt-get install libass-dev

share|improve this answer

edited Mar 5 '15 at 2:23

answered Jan 9 '15 at 5:59

TarikTarik

1414

sudo apt-get install libass-dev

share|improve this answer

edited Mar 5 '15 at 2:23

answered Jan 9 '15 at 5:59

TarikTarik

1414

answered Jan 9 '15 at 5:59

TarikTarik

1414

answered Jan 9 '15 at 5:59

TarikTarik

1414

0

recompile ffmpeg with:

./configure --enable-libass

Then

make
sudo make install

Then check the new ffmpeg without arguments:

ffmpeg

Mine says "libass" is in the new config.

Then, to convert videos I use:

ffmpeg -i input.avi -vf "ass=subs.ass" out.avi

To obtain the subtitles in .ass from .srt I use:

ffmpeg -i subs.srt subs.ass

Good luck!

share|improve this answer

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186

add a comment | 

0

recompile ffmpeg with:

./configure --enable-libass

Then

make
sudo make install

Then check the new ffmpeg without arguments:

ffmpeg

Mine says "libass" is in the new config.

Then, to convert videos I use:

ffmpeg -i input.avi -vf "ass=subs.ass" out.avi

To obtain the subtitles in .ass from .srt I use:

ffmpeg -i subs.srt subs.ass

Good luck!

share|improve this answer

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186

add a comment | 

recompile ffmpeg with:

./configure --enable-libass

Then

make
sudo make install

Then check the new ffmpeg without arguments:

ffmpeg

Mine says "libass" is in the new config.

Then, to convert videos I use:

ffmpeg -i input.avi -vf "ass=subs.ass" out.avi

To obtain the subtitles in .ass from .srt I use:

ffmpeg -i subs.srt subs.ass

Good luck!

share|improve this answer

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186

./configure --enable-libass

make
sudo make install

ffmpeg

ffmpeg -i input.avi -vf "ass=subs.ass" out.avi

ffmpeg -i subs.srt subs.ass

share|improve this answer

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186

answered Feb 10 '16 at 9:35

Yan King YinYan King Yin

1186