diff --git a/libavcodec/ffv1.c b/libavcodec/ffv1.c
index 7a38bf9212..6bcdf7c0ad 100644
--- a/libavcodec/ffv1.c
+++ b/libavcodec/ffv1.c
@@ -39,7 +39,7 @@
 #include "mathops.h"
 #include "ffv1.h"
 
-av_cold int ffv1_common_init(AVCodecContext *avctx)
+av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
 {
     FFV1Context *s = avctx->priv_data;
 
@@ -64,7 +64,7 @@ av_cold int ffv1_common_init(AVCodecContext *avctx)
     return 0;
 }
 
-av_cold int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
+av_cold int ff_ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
 {
     int j;
 
@@ -98,18 +98,18 @@ av_cold int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
     return 0;
 }
 
-av_cold int ffv1_init_slices_state(FFV1Context *f)
+av_cold int ff_ffv1_init_slices_state(FFV1Context *f)
 {
     int i, ret;
     for (i = 0; i < f->slice_count; i++) {
         FFV1Context *fs = f->slice_context[i];
-        if ((ret = ffv1_init_slice_state(f, fs)) < 0)
+        if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
             return AVERROR(ENOMEM);
     }
     return 0;
 }
 
-av_cold int ffv1_init_slice_contexts(FFV1Context *f)
+av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
 {
     int i;
 
@@ -154,7 +154,7 @@ memfail:
     return AVERROR(ENOMEM);
 }
 
-int ffv1_allocate_initial_states(FFV1Context *f)
+int ff_ffv1_allocate_initial_states(FFV1Context *f)
 {
     int i;
 
@@ -169,7 +169,7 @@ int ffv1_allocate_initial_states(FFV1Context *f)
     return 0;
 }
 
-void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
+void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
 {
     int i, j;
 
@@ -197,7 +197,7 @@ void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
 }
 
 
-av_cold int ffv1_close(AVCodecContext *avctx)
+av_cold int ff_ffv1_close(AVCodecContext *avctx)
 {
     FFV1Context *s = avctx->priv_data;
     int i, j;
diff --git a/libavcodec/ffv1.h b/libavcodec/ffv1.h
index ed347e2375..9526b1634f 100644
--- a/libavcodec/ffv1.h
+++ b/libavcodec/ffv1.h
@@ -130,13 +130,13 @@ typedef struct FFV1Context {
     int slice_rct_ry_coef;
 } FFV1Context;
 
-int ffv1_common_init(AVCodecContext *avctx);
-int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs);
-int ffv1_init_slices_state(FFV1Context *f);
-int ffv1_init_slice_contexts(FFV1Context *f);
-int ffv1_allocate_initial_states(FFV1Context *f);
-void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs);
-int ffv1_close(AVCodecContext *avctx);
+int ff_ffv1_common_init(AVCodecContext *avctx);
+int ff_ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs);
+int ff_ffv1_init_slices_state(FFV1Context *f);
+int ff_ffv1_init_slice_contexts(FFV1Context *f);
+int ff_ffv1_allocate_initial_states(FFV1Context *f);
+void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs);
+int ff_ffv1_close(AVCodecContext *avctx);
 
 static av_always_inline int fold(int diff, int bits)
 {
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index f84a4fb50d..6c035b8eab 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -402,17 +402,17 @@ static int decode_slice(AVCodecContext *c, void *arg)
     fs->slice_rct_ry_coef = 1;
 
     if (f->version > 2) {
-        if (ffv1_init_slice_state(f, fs) < 0)
+        if (ff_ffv1_init_slice_state(f, fs) < 0)
             return AVERROR(ENOMEM);
         if (decode_slice_header(f, fs) < 0) {
             fs->slice_damaged = 1;
             return AVERROR_INVALIDDATA;
         }
     }
-    if ((ret = ffv1_init_slice_state(f, fs)) < 0)
+    if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
         return ret;
     if (f->cur->key_frame || fs->slice_reset_contexts)
-        ffv1_clear_slice_state(f, fs);
+        ff_ffv1_clear_slice_state(f, fs);
 
     width  = fs->slice_width;
     height = fs->slice_height;
@@ -571,7 +571,7 @@ static int read_extra_header(FFV1Context *f)
             return AVERROR_INVALIDDATA;
         }
     }
-    if ((ret = ffv1_allocate_initial_states(f)) < 0)
+    if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
         return ret;
 
     for (i = 0; i < f->quant_table_count; i++)
@@ -852,13 +852,13 @@ static av_cold int decode_init(AVCodecContext *avctx)
     FFV1Context *f = avctx->priv_data;
     int ret;
 
-    if ((ret = ffv1_common_init(avctx)) < 0)
+    if ((ret = ff_ffv1_common_init(avctx)) < 0)
         return ret;
 
     if (avctx->extradata && (ret = read_extra_header(f)) < 0)
         return ret;
 
-    if ((ret = ffv1_init_slice_contexts(f)) < 0)
+    if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
         return ret;
 
     avctx->internal->allocate_progress = 1;
@@ -1021,7 +1021,7 @@ static int init_thread_copy(AVCodecContext *avctx)
     f->picture.f      = av_frame_alloc();
     f->last_picture.f = av_frame_alloc();
 
-    if ((ret = ffv1_init_slice_contexts(f)) < 0)
+    if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
         return ret;
 
     return 0;
@@ -1106,7 +1106,7 @@ AVCodec ff_ffv1_decoder = {
     .id             = AV_CODEC_ID_FFV1,
     .priv_data_size = sizeof(FFV1Context),
     .init           = decode_init,
-    .close          = ffv1_close,
+    .close          = ff_ffv1_close,
     .decode         = decode_frame,
     .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy),
     .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index e24c320e32..35d88ca244 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -667,7 +667,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
     int i, j, k, m, ret;
 
-    if ((ret = ffv1_common_init(avctx)) < 0)
+    if ((ret = ff_ffv1_common_init(avctx)) < 0)
         return ret;
 
     s->version = 0;
@@ -851,7 +851,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
         p->context_count     = s->context_count[p->quant_table_index];
     }
 
-    if ((ret = ffv1_allocate_initial_states(s)) < 0)
+    if ((ret = ff_ffv1_allocate_initial_states(s)) < 0)
         return ret;
 
 #if FF_API_CODED_FRAME
@@ -975,9 +975,9 @@ slices_ok:
             return ret;
     }
 
-    if ((ret = ffv1_init_slice_contexts(s)) < 0)
+    if ((ret = ff_ffv1_init_slice_contexts(s)) < 0)
         return ret;
-    if ((ret = ffv1_init_slices_state(s)) < 0)
+    if ((ret = ff_ffv1_init_slices_state(s)) < 0)
         return ret;
 
 #define STATS_OUT_SIZE 1024 * 1024 * 6
@@ -1023,7 +1023,7 @@ static void encode_slice_header(FFV1Context *f, FFV1Context *fs)
     if (f->version > 3) {
         put_rac(c, state, fs->slice_coding_mode == 1);
         if (fs->slice_coding_mode == 1)
-            ffv1_clear_slice_state(f, fs);
+            ff_ffv1_clear_slice_state(f, fs);
         put_symbol(c, state, fs->slice_coding_mode, 0);
         if (fs->slice_coding_mode != 1) {
             put_symbol(c, state, fs->slice_rct_by_coef, 0);
@@ -1140,7 +1140,7 @@ static int encode_slice(AVCodecContext *c, void *arg)
 
 retry:
     if (f->key_frame)
-        ffv1_clear_slice_state(f, fs);
+        ff_ffv1_clear_slice_state(f, fs);
     if (f->version > 2) {
         encode_slice_header(f, fs);
     }
@@ -1337,7 +1337,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
 static av_cold int encode_close(AVCodecContext *avctx)
 {
-    ffv1_close(avctx);
+    ff_ffv1_close(avctx);
     return 0;
 }