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examples/transcode_aac: generate proper PTS and set the muxer timebase

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Andreas Unterweger 2015-01-27 09:03:08 +01:00 committed by Anton Khirnov
parent c9b19ac892
commit 3a70c0c95f
1 changed files with 13 additions and 0 deletions
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13
doc/examples/transcode_aac.c
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@ -182,6 +182,10 @@ static int open_output_file(const char *filename,
/** Allow the use of the experimental AAC encoder */
(*output_codec_context)->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
/** Set the sample rate for the container. */
stream->time_base.den = input_codec_context->sample_rate;
stream->time_base.num = 1;
/**
* Some container formats (like MP4) require global headers to be present
* Mark the encoder so that it behaves accordingly.
@ -553,6 +557,9 @@ static int init_output_frame(AVFrame **frame,
return 0;
}
/** Global timestamp for the audio frames */
static int64_t pts = 0;
/** Encode one frame worth of audio to the output file. */
static int encode_audio_frame(AVFrame *frame,
AVFormatContext *output_format_context,
@ -564,6 +571,12 @@ static int encode_audio_frame(AVFrame *frame,
int error;
init_packet(&output_packet);
/** Set a timestamp based on the sample rate for the container. */
if (frame) {
frame->pts = pts;
pts += frame->nb_samples;
}
/**
* Encode the audio frame and store it in the temporary packet.
* The output audio stream encoder is used to do this.