av_dump_format needs the codecs opened in order to print them.
---
libavformat/output-example.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/libavformat/output-example.c b/libavformat/output-example.c
index a467109..195f9df 100644
--- a/libavformat/output-example.c
+++ b/libavformat/output-example.c
@@ -147,8 +147,10 @@ static void write_audio_frame(AVFormatContext *oc,
AVStream *st)
get_audio_frame(samples, audio_input_frame_size, c->channels);
frame->nb_samples = audio_input_frame_size;
- avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt, (uint8_t
*)samples,
- audio_input_frame_size *
av_get_bytes_per_sample(c->sample_fmt)
+ avcodec_fill_audio_frame(frame, c->channels,
+ c->sample_fmt, (uint8_t *)samples,
+ audio_input_frame_size *
+ av_get_bytes_per_sample(c->sample_fmt)
* c->channels, 1);
avcodec_encode_audio2(c, &pkt, frame, &got_packet);
@@ -464,8 +466,6 @@ int main(int argc, char **argv)
audio_st = add_audio_stream(oc, fmt->audio_codec);
}
- av_dump_format(oc, 0, filename, 1);
-
/* now that all the parameters are set, we can open the audio and
video codecs and allocate the necessary encode buffers */
if (video_st)
@@ -473,6 +473,8 @@ int main(int argc, char **argv)
if (audio_st)
open_audio(oc, audio_st);
+ av_dump_format(oc, 0, filename, 1);
+
/* open the output file, if needed */
if (!(fmt->flags & AVFMT_NOFILE)) {
if (avio_open(&oc->pb, filename, AVIO_FLAG_WRITE) < 0) {
--
1.7.8.rc1
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