ffmpeg: set sub_text_format to ass (without timing) by default

Fixes Ticket #4783

1 files changed, 2 insertions, 0 deletions

diff --git a/ffmpeg.c b/ffmpeg.c
index 9bbe5c3759..d1485888e8 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2547,6 +2547,8 @@ static int init_input_stream(int ist_index, char *error, int error_len)
                 av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
         }
 
+        av_dict_set(&ist->decoder_opts, "sub_text_format", "ass", AV_DICT_DONT_OVERWRITE);
+
         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {