Change sample format
toAV_SAMPLE_FMT_FLTP______________
From: [email protected] [[email protected]] on behalf
of Justin [[email protected]]
Sent: Sunday, April 07, 2013 11:38 AM
To: libav-user
Subject: [Libav-user] AAC encoding question
Hi,
I am trying to encode audio using the AAC audio encoder with the program
below, but when I call the avcodec_open2 funtion, the function always return
-733130664. I don't know where is wrong in it. I'll very appreciate someone who
can point out the wrong.
note:if the codec AV_CODEC_ID_AAC is changed as AV_CODEC_ID_MP2, the
avcodec_open2 can return 0 successfully!
============program=================
main()
{
int ret;
AVCodec *codec;
AVCodecContext *c;
AVFrame *frame;
avcodec_register_all();
codec = avcodec_find_encoder(AV_CODEC_ID_AAC);
if (!codec) return;
//avcodec_register(codec);
c = avcodec_alloc_context3(codec);
if (!c) return;
c->bit_rate = 64000;
c->sample_rate = 44100;
c->channels = 2;
c->frame_size = 88200;
c->sample_fmt = AV_SAMPLE_FMT_S16;
// open it
ret = avcodec_open2(c, codec, NULL);
if (ret >= 0) printf("OK\r\n");
}
Best Regards,
Justin
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