[FFmpeg-devel] [PATCH 2/5] lavc/libopenh264enc: use framerate if available

[mypopy at gmail.com]

On Sun, Jul 26, 2020 at 8:26 PM Jun Zhao <mypopydev at gmail.com> wrote:
>
> From: Jun Zhao <barryjzhao at tencent.com>
>
> Respecting the framerate in the libopenh264enc codec context.
>
> Both the libx264 and libx264 encoders already contain similar logic
> to first check the framerate before falling back to the timebase.
>
> Signed-off-by: Jun Zhao <barryjzhao at tencent.com>
> ---
>  libavcodec/libopenh264enc.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
> index f63aa52..cf48566 100644
> --- a/libavcodec/libopenh264enc.c
> +++ b/libavcodec/libopenh264enc.c
> @@ -156,7 +156,16 @@ static av_cold int svc_encode_init(AVCodecContext *avctx)
>
>      (*s->encoder)->GetDefaultParams(s->encoder, &param);
>
> -    param.fMaxFrameRate              = 1/av_q2d(avctx->time_base);
> +    if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
> +        param.fMaxFrameRate = av_q2d(avctx->framerate);
> +    } else {
> +        if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
> +            av_log(avctx, AV_LOG_ERROR,
> +                   "Could not set framerate for libopenh264enc: integer overflow\n");
> +            return AVERROR(EINVAL);
> +        }
> +        param.fMaxFrameRate = 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1);
> +    }
>      param.iPicWidth                  = avctx->width;
>      param.iPicHeight                 = avctx->height;
>      param.iTargetBitrate             = avctx->bit_rate > 0 ? avctx->bit_rate : TARGET_BITRATE_DEFAULT;
> --
> 2.7.4
ping ?