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| author | Andreas Unterweger <dustsigns@gmail.com> | 2015-01-27 08:58:47 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2015-01-27 08:58:47 +0100 |
| commit | 749a89d1b8bb73b4d4f14c48f33259a1300c1761 (patch) | |
| tree | d25e859c1863f0e3fdf63bb9e84ef17702df695d /doc | |
| parent | 443b71928b2f36362e805c037751e6c3c79ea4e8 (diff) | |
| download | ffmpeg-749a89d1b8bb73b4d4f14c48f33259a1300c1761.tar.gz | |
examples/transcode_aac: properly select the output sample format
Makes the example work with all the supported AAC encoders.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/examples/transcode_aac.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/doc/examples/transcode_aac.c b/doc/examples/transcode_aac.c index 6206afe2e4..75dd1e2738 100644 --- a/doc/examples/transcode_aac.c +++ b/doc/examples/transcode_aac.c @@ -40,11 +40,9 @@ #include "libavresample/avresample.h" /** The output bit rate in kbit/s */ -#define OUTPUT_BIT_RATE 48000 +#define OUTPUT_BIT_RATE 96000 /** The number of output channels */ #define OUTPUT_CHANNELS 2 -/** The audio sample output format */ -#define OUTPUT_SAMPLE_FORMAT AV_SAMPLE_FMT_S16 /** * Convert an error code into a text message. @@ -178,9 +176,12 @@ static int open_output_file(const char *filename, (*output_codec_context)->channels = OUTPUT_CHANNELS; (*output_codec_context)->channel_layout = av_get_default_channel_layout(OUTPUT_CHANNELS); (*output_codec_context)->sample_rate = input_codec_context->sample_rate; - (*output_codec_context)->sample_fmt = AV_SAMPLE_FMT_S16; + (*output_codec_context)->sample_fmt = output_codec->sample_fmts[0]; (*output_codec_context)->bit_rate = OUTPUT_BIT_RATE; + /** Allow the use of the experimental AAC encoder */ + (*output_codec_context)->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL; + /** * Some container formats (like MP4) require global headers to be present * Mark the encoder so that it behaves accordingly. @@ -276,10 +277,11 @@ static int init_resampler(AVCodecContext *input_codec_context, } /** Initialize a FIFO buffer for the audio samples to be encoded. */ -static int init_fifo(AVAudioFifo **fifo) +static int init_fifo(AVAudioFifo **fifo, AVCodecContext *output_codec_context) { /** Create the FIFO buffer based on the specified output sample format. */ - if (!(*fifo = av_audio_fifo_alloc(OUTPUT_SAMPLE_FORMAT, OUTPUT_CHANNELS, 1))) { + if (!(*fifo = av_audio_fifo_alloc(output_codec_context->sample_fmt, + output_codec_context->channels, 1))) { fprintf(stderr, "Could not allocate FIFO\n"); return AVERROR(ENOMEM); } @@ -673,7 +675,7 @@ int main(int argc, char **argv) &resample_context)) goto cleanup; /** Initialize the FIFO buffer to store audio samples to be encoded. */ - if (init_fifo(&fifo)) + if (init_fifo(&fifo, output_codec_context)) goto cleanup; /** Write the header of the output file container. */ if (write_output_file_header(output_format_context)) |