This is consistent with other AVSubtitle timing adjustments.
---
libavcodec/utils.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index c625bbc..2c8fc9c 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -2582,8 +2582,13 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx,
AVSubtitle *sub,
#if FF_API_ASS_TIMING
if (avctx->sub_text_format == FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
- && *got_sub_ptr && sub->num_rects)
- ret = convert_sub_to_old_ass_form(sub, avpkt,
avctx->time_base);
+ && *got_sub_ptr && sub->num_rects) {
+ if (!avctx->pkt_timebase.num) {
+ av_log(avctx, AV_LOG_ERROR, "packet time base not set\n");
+ return AVERROR_BUG;
+ }
+ ret = convert_sub_to_old_ass_form(sub, avpkt,
avctx->pkt_timebase);
+ }
#endif
if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
--
2.7.4
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