ffmpeg & burnt-in subtitles: Fontconfig & invalid attribute 'mode'

[oceanclub]

I'm trying to use ffmpeg to create MP4 files with burnt-in subtitles (from a .srt file) as described in:

https://trac.ffmpeg.org/wiki/HowToBurnSubtitlesIntoVideo

I'm having no luck. I get an output file, but no burnt in subtitles. The issue could be fontconfig.

I'm using ffmpeg on Windows 7 (64 bit), built with --enable-libass as required:

E:\Downloads>ffmpeg -h
ffmpeg version N-69190-g6c559a0 Copyright (c) 2000-2015 the FFmpeg developers
  built on Jan 22 2015 03:13:44 with gcc 4.9.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enab
le-zlib
  libavutil      54. 17.100 / 54. 17.100
  libavcodec     56. 20.100 / 56. 20.100
  libavformat    56. 19.100 / 56. 19.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5.  8.101 /  5.  8.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
Hyper fast Audio and Video encoder

In the home directory, I added a fonts.conf file for fontconfig, and set up the relevant environment variables:

FC_CONFIG_DIR=C:\Program Files\ffmpeg
FONTCONFIG_FILE=fonts.conf
FONTCONFIG_PATH=C:\Program Files\ffmpeg

Then I took an example fonts.conf file from here:
http://www.freedesktop.org/software/fontconfig/fontconfig-user.html

Replacing

<dir>/usr/share/fonts</dir>

with

<dir>C:\Windows\Fonts</dir>

for my environment.

Then I tried the command:

ffmpeg -i {input}.mkv -vf subtitles={input}.srt -codec:v libx264 -codec:a ac3 {output}.mp4

I get the following fontconfig error:

Fontconfig error: line 22: invalid attribute 'mode'
Fontconfig error: line 23: invalid attribute 'mode'
Fontconfig error: line 24: invalid attribute 'mode'
Fontconfig error: line 80: not well-formed (invalid token)
Fontconfig error: Cannot load default config file
[Parsed_subtitles_0 @ 0000000004ee9f20] No usable fontconfig configuratio
found, using fallback.
Fontconfig error: line 22: invalid attribute 'mode'
Fontconfig error: line 23: invalid attribute 'mode'
Fontconfig error: line 24: invalid attribute 'mode'
Fontconfig error: line 80: not well-formed (invalid token)
Fontconfig error: Cannot load default config file

I don't understand the issues with "invalid attribute" since I'm using an official conf file. Any help appreciated,

P.

[Baldrick]

DId you read http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=10&t=318&start=20 also?

[oceanclub]

DId you read http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=10&t=318&start=20 also?

Thanks the reply - yes I did and in fact tried some of the conf example there, but like people in the thread also got the same "invalid attributes" errors.

P.

[videobruger]

I had a similar problem (No usable fontconfig configuration found, using fallback.) using a fonts.conf from an "official" site.

Anyway, using the fonts.conf that comes with DVDStyler solved my problems. Perhaps worth a try. Attached.

[oceanclub]

BRILLIANT. Many many thanks. Just to note for anyone else using it, there's what looks like a freeze/hang just after you run ffmpeg using this, but I presume there's some font-processing occuring - after 30 seconds encoding starts.

P.