On 04/13/2014 05:39 AM, Anton Khirnov wrote:
> ---
> libavcodec/avcodec.h | 17 +++++++++++------
> 1 file changed, 11 insertions(+), 6 deletions(-)
>
> diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
> index 622eac3..92c12b3 100644
> --- a/libavcodec/avcodec.h
> +++ b/libavcodec/avcodec.h
> @@ -1205,12 +1205,17 @@ typedef struct AVCodecContext {
> * encoded input.
> *
> * Audio:
> - * For encoding, this is the number of "priming" samples added to the
> - * beginning of the stream. The decoded output will be delayed by this
> - * many samples relative to the input to the encoder. Note that this
> - * field is purely informational and does not directly affect the pts
> - * output by the encoder, which should always be based on the actual
> - * presentation time, including any delay.
> + * For encoding, this is the number of "priming" samples added by the
> + * encoder to the beginning of the stream. The decoded output will be
> + * delayed by this many samples relative to the input to the encoder
> (or
> + * more, if the decoder adds its own padding).
> + * The timestamps on the output packets are adjusted by the encoder so
> + * that they always refer to the first sample of the data actually
> + * contained in the packet, including any added padding.
> + * E.g. if the timebase is 1/samplerate and the timestamp of the first
> + * input sample is 0, the timestamp of the first output packet will be
> + * -delay.
> + *
> * For decoding, this is the number of samples the decoder needs to
> * output before the decoder's output is valid. When seeking, you
> should
> * start decoding this many samples prior to your desired seek point.
Great.
Thanks,
Justin
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