Due to conditional expressions, it is possible for them to be resolved
successfully. A warning is still printed.
if ((vars_w[VAR_OUT_H] || vars_w[VAR_OH]) &&
(vars_h[VAR_OUT_W] || vars_h[VAR_OW])) {
- av_log(ctx, AV_LOG_ERROR, "Circular expressions invalid for width '%s' and height '%s'.\n", scale->w_expr, scale->h_expr);
- return AVERROR(EINVAL);
+ av_log(ctx, AV_LOG_WARNING, "Circular references detected for width '%s' and height '%s' - possibly invalid.\n", scale->w_expr, scale->h_expr);
}
if (ctx->filter != &ff_vf_scale2ref &&