[FFmpeg-devel] [PATCH v4 2/2] doc/examples/transcode_aac: Set decoder packet timebase

Andreas Unterweger dustsigns at gmail.com
Wed Apr 27 17:07:09 EEST 2022


Previously, the default timebase caused two warnings during decoding
about not being able to update timestamps for skipped and discarded
samples, respectively.

Signed-off-by: Andreas Unterweger <dustsigns at gmail.com>
---
 doc/examples/transcode_aac.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/examples/transcode_aac.c b/doc/examples/transcode_aac.c
index c9b93f6439..6197369756 100644
--- a/doc/examples/transcode_aac.c
+++ b/doc/examples/transcode_aac.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018 Andreas Unterweger
+ * Copyright (c) 2013-2022 Andreas Unterweger
  *
  * This file is part of FFmpeg.
  *
@@ -120,6 +120,10 @@ static int open_input_file(const char *filename,
         avformat_close_input(input_format_context);
         return error;
     }
+
+    /* Set the packet timebase for the decoder. The input file's sample
+     * rate is used as the denominator for simplicity. */
+    avctx->pkt_timebase = (AVRational) { 1, avctx->sample_rate };

     /* Save the decoder context for easier access later. */
     *input_codec_context = avctx;
-- 
2.30.2


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