Merge remote-tracking branch 'qatar/master'

* qatar/master: (22 commits)
  wma: Clip WMA1 and WMA2 frame length to 11 bits.
  movenc: Don't require frame_size to be set for modes other than mov
  doc: Update APIchanges with info on muxer flushing
  movenc: Reindent a block
  tools: Remove some unnecessary #undefs.
  rv20: prevent calling ff_h263_decode_mba() with unset height/width
  tools: K&R reformatting cosmetics
  Ignore generated aviocat and ismindex tools.
  build: Automatically include architecture-specific library Makefile snippets.
  indeo5: prevent null pointer dereference on broken files
  pktdumper: Use usleep instead of sleep
  cosmetics: Remove some unnecessary block braces.
  Drop unnecessary prefix from *sink* variable and struct names.
  Add a tool for creating smooth streaming manifests
  movdec: Calculate an average bit rate for fragmented streams, too
  movenc: Write the sample rate instead of time scale in the stsd atom
  movenc: Add a separate ismv/isma (smooth streaming) muxer
  movenc: Allow the caller to decide on fragmentation
  libavformat: Add a flag for muxers that support write_packet(NULL) for flushing
  movenc: Add support for writing fragmented mov files
  ...

Conflicts:
	Changelog
	cmdutils.c
	cmdutils.h
	doc/APIchanges
	ffmpeg.c
	ffplay.c
	libavfilter/Makefile
	libavformat/Makefile
	libavformat/avformat.h
	libavformat/movenc.c
	libavformat/movenc.h
	libavformat/version.h
	tools/graph2dot.c

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

1 files changed, 9 insertions, 1 deletions

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 9e3f775d43..005704c7f0 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -3336,7 +3336,15 @@ static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
 
 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
 {
-    int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
+    int ret;
+
+    if (!pkt) {
+        if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
+            return s->oformat->write_packet(s, pkt);
+        return 1;
+    }
+
+    ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
 
     if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
         return ret;