ffmpeg: Factor out redundant sync_ipts calculation

[ffmpeg] / libavformat / output-example.c

diff --git a/libavformat/output-example.c b/libavformat/output-example.c
index 17c97f79db37ac480fead555243c8e84a2eec972..fb1d3a78192fb00e0344f88ff6766b1429f72466 100644 (file)
--- a/libavformat/output-example.c
+++ b/libavformat/output-example.c
@@ -27,10 +27,6 @@
 #include <string.h>
 #include <math.h>
 
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
 #include "libavformat/avformat.h"
 #include "libswscale/swscale.h"
 
@@ -75,6 +71,11 @@ static AVStream *add_audio_stream(AVFormatContext *oc, enum CodecID codec_id)
     c->bit_rate = 64000;
     c->sample_rate = 44100;
     c->channels = 2;
+
+    // some formats want stream headers to be separate
+    if(oc->oformat->flags & AVFMT_GLOBALHEADER)
+        c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+
     return st;
 }
 
@@ -156,7 +157,7 @@ static void write_audio_frame(AVFormatContext *oc, AVStream *st)
 
     pkt.size= avcodec_encode_audio(c, audio_outbuf, audio_outbuf_size, samples);
 
-    if (c->coded_frame->pts != AV_NOPTS_VALUE)
+    if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)
         pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
     pkt.flags |= PKT_FLAG_KEY;
     pkt.stream_index= st->index;
@@ -442,10 +443,10 @@ int main(int argc, char **argv)
 
     /* auto detect the output format from the name. default is
        mpeg. */
-    fmt = guess_format(NULL, filename, NULL);
+    fmt = av_guess_format(NULL, filename, NULL);
     if (!fmt) {
         printf("Could not deduce output format from file extension: using MPEG.\n");
-        fmt = guess_format("mpeg", NULL, NULL);
+        fmt = av_guess_format("mpeg", NULL, NULL);
     }
     if (!fmt) {
         fprintf(stderr, "Could not find suitable output format\n");