X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Futils.c;h=47324ea4bc5c5453f8040ffb50a15aabb91178c8;hb=5853423c3f514dcc72870930544f9fab7c0f5f20;hp=a12f26afd78496174bf04cf882e66e60ccfb6468;hpb=c5577c403f72d04231eea013546211765bf8d65b;p=ffmpeg

diff --git a/libavformat/utils.c b/libavformat/utils.c
index a12f26afd78..47324ea4bc5 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -645,7 +645,9 @@ static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket
             continue;
         if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
            && !pktl->pkt.duration){
-            pktl->pkt.pts= pktl->pkt.dts= st->cur_dts;
+            pktl->pkt.dts= st->cur_dts;
+            if(!st->codec->has_b_frames)
+                pktl->pkt.pts= st->cur_dts;
             st->cur_dts += pkt->duration;
             pktl->pkt.duration= pkt->duration;
         }else
@@ -1694,7 +1696,7 @@ static int has_codec_parameters(AVCodecContext *enc)
     int val;
     switch(enc->codec_type) {
     case CODEC_TYPE_AUDIO:
-        val = enc->sample_rate;
+        val = enc->sample_rate && enc->channels;
         break;
     case CODEC_TYPE_VIDEO:
         val = enc->width && enc->pix_fmt != PIX_FMT_NONE;