diff --git a/libavcodec/r210enc.c b/libavcodec/r210enc.c
index 89518bce29..851b99c128 100644
--- a/libavcodec/r210enc.c
+++ b/libavcodec/r210enc.c
@@ -94,6 +94,7 @@ const AVCodec ff_r210_encoder = {
     .init           = encode_init,
     .encode2        = encode_frame,
     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE },
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 #endif
 #if CONFIG_R10K_ENCODER
@@ -105,6 +106,7 @@ const AVCodec ff_r10k_encoder = {
     .init           = encode_init,
     .encode2        = encode_frame,
     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE },
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 #endif
 #if CONFIG_AVRP_ENCODER
@@ -116,5 +118,6 @@ const AVCodec ff_avrp_encoder = {
     .init           = encode_init,
     .encode2        = encode_frame,
     .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_GBRP10, AV_PIX_FMT_NONE },
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 #endif