diff --git a/libavcodec/mediacodec.c b/libavcodec/mediacodec.c
index 3ddd303c97..b0aae43a87 100644
--- a/libavcodec/mediacodec.c
+++ b/libavcodec/mediacodec.c
@@ -92,9 +92,10 @@ int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
     int released = atomic_fetch_add(&buffer->released, 1);
 
     if (!released && (ctx->delay_flush || buffer->serial == atomic_load(&ctx->serial))) {
-        av_log(ctx->avctx, AV_LOG_TRACE,
-               "Releasing output buffer %zd ts=%"PRId64" render=%d\n",
-               buffer->index, buffer->pts, render);
+        atomic_fetch_sub(&ctx->hw_buffer_count, 1);
+        av_log(ctx->avctx, AV_LOG_DEBUG,
+               "Releasing output buffer %zd (%p) ts=%"PRId64" with render=%d [%d pending]\n",
+               buffer->index, buffer, buffer->pts, render, atomic_load(&ctx->hw_buffer_count));
         return ff_AMediaCodec_releaseOutputBuffer(ctx->codec, buffer->index, render);
     }
 
diff --git a/libavcodec/mediacodecdec_common.c b/libavcodec/mediacodecdec_common.c
index 5064809cf6..2697af3d08 100644
--- a/libavcodec/mediacodecdec_common.c
+++ b/libavcodec/mediacodecdec_common.c
@@ -179,6 +179,10 @@ static void mediacodec_buffer_release(void *opaque, uint8_t *data)
     int released = atomic_load(&buffer->released);
 
     if (!released && (ctx->delay_flush || buffer->serial == atomic_load(&ctx->serial))) {
+        atomic_fetch_sub(&ctx->hw_buffer_count, 1);
+        av_log(ctx->avctx, AV_LOG_DEBUG,
+               "Releasing output buffer %zd (%p) ts=%"PRId64" on free() [%d pending]\n",
+               buffer->index, buffer, buffer->pts, atomic_load(&ctx->hw_buffer_count));
         ff_AMediaCodec_releaseOutputBuffer(ctx->codec, buffer->index, 0);
     }
 
@@ -246,6 +250,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
     frame->data[3] = (uint8_t *)buffer;
 
+    atomic_fetch_add(&s->hw_buffer_count, 1);
+    av_log(avctx, AV_LOG_DEBUG,
+            "Wrapping output buffer %zd (%p) ts=%"PRId64" [%d pending]\n",
+            buffer->index, buffer, buffer->pts, atomic_load(&s->hw_buffer_count));
+
     return 0;
 fail:
     av_freep(buffer);
@@ -429,6 +438,7 @@ static int mediacodec_dec_flush_codec(AVCodecContext *avctx, MediaCodecDecContex
     s->flushing = 0;
     s->eos = 0;
     atomic_fetch_add(&s->serial, 1);
+    atomic_init(&s->hw_buffer_count, 0);
 
     status = ff_AMediaCodec_flush(codec);
     if (status < 0) {
@@ -454,6 +464,7 @@ int ff_mediacodec_dec_init(AVCodecContext *avctx, MediaCodecDecContext *s,
 
     s->avctx = avctx;
     atomic_init(&s->refcount, 1);
+    atomic_init(&s->hw_buffer_count, 0);
     atomic_init(&s->serial, 1);
 
     pix_fmt = ff_get_format(avctx, pix_fmts);
diff --git a/libavcodec/mediacodecdec_common.h b/libavcodec/mediacodecdec_common.h
index 3fd2412a65..4f3b4f9fa5 100644
--- a/libavcodec/mediacodecdec_common.h
+++ b/libavcodec/mediacodecdec_common.h
@@ -38,6 +38,7 @@ typedef struct MediaCodecDecContext {
 
     AVCodecContext *avctx;
     atomic_int refcount;
+    atomic_int hw_buffer_count;
 
     char *codec_name;