diff --git a/libavcodec/mlpenc.c b/libavcodec/mlpenc.c
index c6a7963c22..f99d2f5d6f 100644
--- a/libavcodec/mlpenc.c
+++ b/libavcodec/mlpenc.c
@@ -2226,9 +2226,6 @@ static int mlp_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     if ((ret = ff_alloc_packet2(avctx, avpkt, 87500 * avctx->channels, 0)) < 0)
         return ret;
 
-    if (!frame)
-        return 1;
-
     /* add current frame to queue */
     if ((ret = ff_af_queue_add(&ctx->afq, frame)) < 0)
         return ret;
@@ -2389,7 +2386,7 @@ AVCodec ff_mlp_encoder = {
     .init                   = mlp_encode_init,
     .encode2                = mlp_encode_frame,
     .close                  = mlp_encode_close,
-    .capabilities           = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_EXPERIMENTAL,
+    .capabilities           = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_EXPERIMENTAL,
     .sample_fmts            = (const enum AVSampleFormat[]) {AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE},
     .supported_samplerates  = (const int[]) {44100, 48000, 88200, 96000, 176400, 192000, 0},
     .channel_layouts        = ff_mlp_channel_layouts,
@@ -2405,7 +2402,7 @@ AVCodec ff_truehd_encoder = {
     .init                   = mlp_encode_init,
     .encode2                = mlp_encode_frame,
     .close                  = mlp_encode_close,
-    .capabilities           = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_EXPERIMENTAL,
+    .capabilities           = AV_CODEC_CAP_SMALL_LAST_FRAME | AV_CODEC_CAP_EXPERIMENTAL,
     .sample_fmts            = (const enum AVSampleFormat[]) {AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE},
     .supported_samplerates  = (const int[]) {44100, 48000, 88200, 96000, 176400, 192000, 0},
     .channel_layouts        = (const uint64_t[]) {AV_CH_LAYOUT_STEREO, AV_CH_LAYOUT_5POINT0_BACK, AV_CH_LAYOUT_5POINT1_BACK, 0},