diff --git a/libavformat/flac_picture.c b/libavformat/flac_picture.c
index 81ddf80465..61277e9dee 100644
--- a/libavformat/flac_picture.c
+++ b/libavformat/flac_picture.c
@@ -27,7 +27,7 @@
 #include "id3v2.h"
 #include "internal.h"
 
-int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
+int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size, int truncate_workaround)
 {
     const CodecMime *mime = ff_id3v2_mime_tags;
     enum AVCodecID id = AV_CODEC_ID_NONE;
@@ -36,7 +36,8 @@ int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
     GetByteContext g;
     AVStream *st;
     int width, height, ret = 0;
-    unsigned int len, type;
+    unsigned int type;
+    uint32_t len, left, trunclen = 0;
 
     if (buf_size < 34) {
         av_log(s, AV_LOG_ERROR, "Attached picture metadata block too short\n");
@@ -114,16 +115,34 @@ int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
 
     /* picture data */
     len = bytestream2_get_be32u(&g);
-    if (len <= 0 || len > bytestream2_get_bytes_left(&g)) {
-        av_log(s, AV_LOG_ERROR, "Attached picture metadata block too short\n");
-        if (s->error_recognition & AV_EF_EXPLODE)
-            ret = AVERROR_INVALIDDATA;
-        goto fail;
+
+    left = bytestream2_get_bytes_left(&g);
+    if (len <= 0 || len > left) {
+        // Workaround lavf flacenc bug that allowed writing truncated metadata picture block size if
+        // picture size did not fit in 24 bits
+        if (truncate_workaround && len > left && (len & 0xffffff) == left) {
+            av_log(s, AV_LOG_INFO, "Correcting truncated metadata picture size from %d to %d\n", left, len);
+            trunclen = len - left;
+        } else {
+            av_log(s, AV_LOG_ERROR, "Attached picture metadata block too short\n");
+            if (s->error_recognition & AV_EF_EXPLODE)
+                ret = AVERROR_INVALIDDATA;
+            goto fail;
+        }
     }
     if (!(data = av_buffer_alloc(len + AV_INPUT_BUFFER_PADDING_SIZE))) {
         RETURN_ERROR(AVERROR(ENOMEM));
     }
-    bytestream2_get_bufferu(&g, data->data, len);
+
+    if (trunclen == 0) {
+        bytestream2_get_bufferu(&g, data->data, len);
+    } else {
+        // If truncation was detect copy all data from block and read missing bytes
+        // not included in the block size
+        bytestream2_get_bufferu(&g, data->data, left);
+        if (avio_read(s->pb, data->data + len - trunclen, trunclen) < trunclen)
+            RETURN_ERROR(AVERROR_INVALIDDATA);
+    }
     memset(data->data + len, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 
     if (AV_RB64(data->data) == PNGSIG)
diff --git a/libavformat/flac_picture.h b/libavformat/flac_picture.h
index 4374b6f4f6..61fd0c8806 100644
--- a/libavformat/flac_picture.h
+++ b/libavformat/flac_picture.h
@@ -26,6 +26,6 @@
 
 #define RETURN_ERROR(code) do { ret = (code); goto fail; } while (0)
 
-int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size);
+int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size, int truncate_workaround);
 
 #endif /* AVFORMAT_FLAC_PICTURE_H */
diff --git a/libavformat/flacdec.c b/libavformat/flacdec.c
index cb516fb1f3..79c05f14bf 100644
--- a/libavformat/flacdec.c
+++ b/libavformat/flacdec.c
@@ -146,7 +146,7 @@ static int flac_read_header(AVFormatContext *s)
             }
             av_freep(&buffer);
         } else if (metadata_type == FLAC_METADATA_TYPE_PICTURE) {
-            ret = ff_flac_parse_picture(s, buffer, metadata_size);
+            ret = ff_flac_parse_picture(s, buffer, metadata_size, 1);
             av_freep(&buffer);
             if (ret < 0) {
                 av_log(s, AV_LOG_ERROR, "Error parsing attached picture.\n");
diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
index 27d2c686b6..6f15204ada 100644
--- a/libavformat/oggparsevorbis.c
+++ b/libavformat/oggparsevorbis.c
@@ -165,7 +165,7 @@ int ff_vorbis_comment(AVFormatContext *as, AVDictionary **m,
                 av_freep(&tt);
                 av_freep(&ct);
                 if (ret > 0)
-                    ret = ff_flac_parse_picture(as, pict, ret);
+                    ret = ff_flac_parse_picture(as, pict, ret, 0);
                 av_freep(&pict);
                 if (ret < 0) {
                     av_log(as, AV_LOG_WARNING, "Failed to parse cover art block.\n");
