h264

diff --git a/simp_ffmpeg_output.c b/simp_ffmpeg_output.c
index 7f232981cf684764d9eedcf162f3599a6244931b..f21e1fe77f04bfddf58e6f4f3aa4b81819ddada8 100644 (file)
--- a/simp_ffmpeg_output.c
+++ b/simp_ffmpeg_output.c
@@ -27,14 +27,18 @@ static int _video_init(simp_ffmpeg_t* priv)
        priv->vcodec_ctx->height       = 1080;
        priv->vcodec_ctx->time_base    = (AVRational){1, 25};
        priv->vcodec_ctx->gop_size     = 30;
-       priv->vcodec_ctx->max_b_frames = 2;
+       priv->vcodec_ctx->max_b_frames = 1;
        priv->vcodec_ctx->pix_fmt      = AV_PIX_FMT_YUV420P;
-       priv->vcodec_ctx->sample_aspect_ratio = (AVRational){1, 1};
        s->time_base                   = priv->vcodec_ctx->time_base;
 
        if (priv->fmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
                priv->vcodec_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
 
+       if (c->id == AV_CODEC_ID_H264) {
+               av_opt_set(priv->vcodec_ctx->priv_data, "preset", "ultrafast", 0);
+               av_opt_set(priv->vcodec_ctx->priv_data, "tune", "zerolatency", 0);
+       }
+
        int ret = avcodec_open2(priv->vcodec_ctx, c, NULL);
        if (ret < 0) {
                scf_loge("avcodec_open2 error, ret: %d, %s\n", ret, av_err2str(ret));