[FFmpeg-devel] [PATCH] libavcodec/avcodec.h: fix typos in AVCodecContext.pkt_timebase description

[Stefano Sabatini]

On date Sunday 2023-04-02 20:05:35 +0200, Stefano Sabatini wrote:
> ---
>  libavcodec/avcodec.h | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
> index 1e91b9cb53..dec5e40eac 100644
> --- a/libavcodec/avcodec.h
> +++ b/libavcodec/avcodec.h
> @@ -1781,9 +1781,9 @@ typedef struct AVCodecContext {
>      enum AVPixelFormat sw_pix_fmt;
>  
>      /**
> -     * Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
> -     * - encoding unused.
> -     * - decoding set by user.
> +     * Timebase in which pkt_dts/pts and AVPacket.dts/pts are expressed.
> +     * - encoding: unused.
> +     * - decoding: set by user.
>       */
>      AVRational pkt_timebase;

BTW, also I'm still confused by this field.

What happens in case it is not set? In this case I assume the
decoder/libavcodec will pick a suitable timebase which is directly set
in the decoded frames? Is the field internally set in this case, or
the information is only stored in the output frames?

How libavcodec detects if the field is set or not?