ffmpeg: fix units of next_?ts in debug printing routine.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

ffmpeg.c

@@ -3771,8 +3771,8 @@ static int transcode(void)
             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
                     "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
-                    av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
-                    av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
+                    av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
+                    av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
                     input_files[ist->file_index]->ts_offset);