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

Andreas Unterweger dustsigns at gmail.com
Wed Feb 23 16:58:28 EET 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 a09690fe45..55bce475b5 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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