From 2d18f64cd6f9394e6ad7a5c2278e41196f6bc33a Mon Sep 17 00:00:00 2001
From: Andreas Unterweger <[email protected]>
Date: Mon, 26 Jan 2015 12:00:58 +0100
Subject: [PATCH 3/3] Generate proper PTS for the muxer and set the container
time base to get rid of the newly introduced warning when only the
container's codec time base is set
---
doc/examples/transcode_aac.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/doc/examples/transcode_aac.c b/doc/examples/transcode_aac.c
index eac6882..0ccd043 100644
--- a/doc/examples/transcode_aac.c
+++ b/doc/examples/transcode_aac.c
@@ -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.
--
1.9.1
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