ffmpeg: add the -canvas_size option.

Allows, amongst other things, to override the size guessed
by the sub2video hack.

Note: the -s option could have more or less the same semantic,
but it receives a special treatment by the options system.

1 files changed, 2 insertions, 0 deletions

diff --git a/ffmpeg.h b/ffmpeg.h
index a04913e793..95c2aa6db4 100644
--- a/ffmpeg.h
+++ b/ffmpeg.h
@@ -169,6 +169,8 @@ typedef struct OptionsContext {
     int        nb_reinit_filters;
     SpecifierOpt *fix_sub_duration;
     int        nb_fix_sub_duration;
+    SpecifierOpt *canvas_sizes;
+    int        nb_canvas_sizes;
     SpecifierOpt *pass;
     int        nb_pass;
     SpecifierOpt *passlogfiles;