Hello,
I have PCM data that I converted to FLT and I am trying to encode that to AAC.
But the audio is twice as long as it should be and very bad. I can barely make
it out.
This is my code below. audio_samples is an array of floats (between -1.0 and
1.0). nb_samples is number of floats in the array.
I do not get any errors and the audio is encoded and saved to file. But, like I
said, it is twice as long and horrible. I will appreciate any help.
Thanks!
static void write_audio_frame2(AVFormatContext *oc, AVStream *st,
int16_t *audio_samples, int nb_samples){ AVCodecContext *c;
AVPacket pkt = { 0 }; // data and size must be 0; AVFrame *frame =
av_frame_alloc(); int got_packet, ret;
av_init_packet(&pkt); c = st->codec;
frame->format = st->codec->sample_fmt; frame->nb_samples = nb_samples;
frame->channels = c->channels; frame->channel_layout = c->channel_layout;
frame->sample_rate = c->sample_rate; ret = avcodec_fill_audio_frame(frame,
c->channels, c->sample_fmt, (uint8_t
*)audio_samples, nb_samples *
av_get_bytes_per_sample(c->sample_fmt) *
c->channels, 1);
if (ret < 0) { fprintf(stderr, "Error filling audio frame\n");
exit(1); } ret = avcodec_encode_audio2(c, &pkt, frame, &got_packet);
if (ret < 0) { fprintf(stderr, "Error encoding audio frame\n");
exit(1); }
if (!got_packet){ return; }
pkt.stream_index = st->index;
/* Write the compressed frame to the media file. */ if
(av_interleaved_write_frame(oc, &pkt) != 0) { fprintf(stderr, "Error
while writing audio frame\n"); exit(1); } av_frame_free(&frame);}_______________________________________________
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