1 files changed, 22 insertions, 1 deletions
diff --git a/libs/ffvpx/libavcodec/bsf.c b/libs/ffvpx/libavcodec/bsf.c
index bd611ea16..e17dc854f 100644
--- a/libs/ffvpx/libavcodec/bsf.c
+++ b/libs/ffvpx/libavcodec/bsf.c
@@ -47,7 +47,8 @@ void av_bsf_free(AVBSFContext **pctx)
 
     av_opt_free(ctx);
 
-    av_packet_free(&ctx->internal->buffer_pkt);
+    if (ctx->internal)
+        av_packet_free(&ctx->internal->buffer_pkt);
     av_freep(&ctx->internal);
     av_freep(&ctx->priv_data);
 
@@ -172,6 +173,16 @@ int av_bsf_init(AVBSFContext *ctx)
     return 0;
 }
 
+void av_bsf_flush(AVBSFContext *ctx)
+{
+    ctx->internal->eof = 0;
+
+    av_packet_unref(ctx->internal->buffer_pkt);
+
+    if (ctx->filter->flush)
+        ctx->filter->flush(ctx);
+}
+
 int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
 {
     int ret;
@@ -340,6 +351,15 @@ static int bsf_list_filter(AVBSFContext *bsf, AVPacket *out)
     return ret;
 }
 
+static void bsf_list_flush(AVBSFContext *bsf)
+{
+    BSFListContext *lst = bsf->priv_data;
+
+    for (int i = 0; i < lst->nb_bsfs; i++)
+        av_bsf_flush(lst->bsfs[i]);
+    lst->idx = lst->flushed_idx = 0;
+}
+
 static void bsf_list_close(AVBSFContext *bsf)
 {
     BSFListContext *lst = bsf->priv_data;
@@ -388,6 +408,7 @@ const AVBitStreamFilter ff_list_bsf = {
         .priv_class     = &bsf_list_class,
         .init           = bsf_list_init,
         .filter         = bsf_list_filter,
+        .flush          = bsf_list_flush,
         .close          = bsf_list_close,
 };