diff --git a/libavcodec/av1_parser.c b/libavcodec/av1_parser.c
index 0b8af8aecf..14826d816e 100644
--- a/libavcodec/av1_parser.c
+++ b/libavcodec/av1_parser.c
@@ -163,12 +163,6 @@ static int av1_parser_parse(AVCodecParserContext *ctx,
     avctx->color_trc = (enum AVColorTransferCharacteristic) color->transfer_characteristics;
     avctx->color_range = color->color_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
 
-    if (ctx->width != avctx->width || ctx->height != avctx->height) {
-        ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
-        if (ret < 0)
-            goto end;
-    }
-
     if (avctx->framerate.num)
         avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));