diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c
index e3c5ad101ccb2..b3b6d2a5a67a7 100644
--- a/libavcodec/shorten.c
+++ b/libavcodec/shorten.c
@@ -768,7 +768,7 @@ AVCodec ff_shorten_decoder = {
     .init           = shorten_decode_init,
     .close          = shorten_decode_close,
     .decode         = shorten_decode_frame,
-    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
+    .capabilities   = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_U8P,
                                                       AV_SAMPLE_FMT_NONE },