Merge commit 'a925f723'

* commit 'a925f723':
  rtp: Don't read priv_data unless it is allocated
  flvenc: Check whether seeking back to the header succeeded
  sapenc: Pass the title on to the chained muxers

Conflicts:
	libavformat/flvenc.c
	libavformat/sapenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/flvenc.c

@@ -426,11 +426,11 @@ static int flv_write_trailer(AVFormatContext *s)
     file_size = avio_tell(pb);
 
     /* update information */
-    if(avio_seek(pb, flv->duration_offset, SEEK_SET) < 0)
+    if (avio_seek(pb, flv->duration_offset, SEEK_SET) < 0)
         av_log(s, AV_LOG_WARNING, "Failed to update header with correct duration.\n");
     else
         put_amf_double(pb, flv->duration / (double)1000);
-    if(avio_seek(pb, flv->filesize_offset, SEEK_SET) < 0)
+    if (avio_seek(pb, flv->filesize_offset, SEEK_SET) < 0)
         av_log(s, AV_LOG_WARNING, "Failed to update header with correct filesize.\n");
     else
         put_amf_double(pb, file_size);

libavformat/rtp.c

@@ -97,7 +97,7 @@ int ff_rtp_get_payload_type(AVFormatContext *fmt,
     AVOutputFormat *ofmt = fmt ? fmt->oformat : NULL;
 
     /* Was the payload type already specified for the RTP muxer? */
-    if (ofmt && ofmt->priv_class) {
+    if (ofmt && ofmt->priv_class && fmt->priv_data) {
         int64_t payload_type;
         if (av_opt_get_int(fmt->priv_data, "payload_type", 0, &payload_type) >= 0 &&
             payload_type >= 0)

libavformat/sapenc.c

@@ -23,6 +23,7 @@
 #include "libavutil/parseutils.h"
 #include "libavutil/random_seed.h"
 #include "libavutil/avstring.h"
+#include "libavutil/dict.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/time.h"
 #include "libavutil/dict.h"
@@ -160,9 +161,8 @@ static int sap_write_header(AVFormatContext *s)
         av_strlcpy(contexts[i]->filename, url, sizeof(contexts[i]->filename));
     }
 
-    if (s->nb_streams > 0 && title) {
+    if (s->nb_streams > 0 && title)
         av_dict_set(&contexts[0]->metadata, "title", title->value, 0);
-    }
 
     ff_url_join(url, sizeof(url), "udp", NULL, announce_addr, port,
                 "?ttl=%d&connect=1", ttl);