diff --git a/libavfilter/vf_drawtext.c b/libavfilter/vf_drawtext.c index bebe0d1652..8dda2d9042 100644 --- a/libavfilter/vf_drawtext.c +++ b/libavfilter/vf_drawtext.c @@ -96,6 +96,7 @@ enum var_name { typedef struct { const AVClass *class; + int reinit; ///< tells if the filter is being reinited uint8_t *fontfile; ///< font to be used uint8_t *text; ///< text to be drawn uint8_t *expanded_text; ///< used to contain the strftime()-expanded text @@ -469,7 +470,8 @@ static int config_input(AVFilterLink *inlink) dtext->var_values[VAR_VSUB] = 1<log2_chroma_h; dtext->var_values[VAR_X] = NAN; dtext->var_values[VAR_Y] = NAN; - dtext->var_values[VAR_N] = 0; + if (!dtext->reinit) + dtext->var_values[VAR_N] = 0; dtext->var_values[VAR_T] = NAN; if ((ret = av_expr_parse(&dtext->x_pexpr, dtext->x_expr, var_names, @@ -483,9 +485,12 @@ static int config_input(AVFilterLink *inlink) static int command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags) { + DrawTextContext *dtext = ctx->priv; + if(!strcmp(cmd, "reinit")){ int ret; uninit(ctx); + dtext->reinit = 1; if((ret=init(ctx, arg, NULL)) < 0) return ret; return config_input(ctx->inputs[0]);