diff --git a/libavcodec/v4l2_buffers.c b/libavcodec/v4l2_buffers.c
index 0726dc121b..46c9f11d7b 100644
--- a/libavcodec/v4l2_buffers.c
+++ b/libavcodec/v4l2_buffers.c
@@ -420,6 +420,7 @@ int ff_v4l2_buffer_buf_to_avframe(AVFrame *frame, V4L2Buffer *avbuf)
     frame->color_range = v4l2_get_color_range(avbuf);
     frame->color_trc = v4l2_get_color_trc(avbuf);
     frame->pts = v4l2_get_pts(avbuf);
+    frame->pkt_dts = AV_NOPTS_VALUE;
 
     /* these two values are updated also during re-init in v4l2_process_driver_event */
     frame->height = avbuf->context->height;
diff --git a/libavcodec/v4l2_m2m_dec.c b/libavcodec/v4l2_m2m_dec.c
index fb2bfde714..a3744208f3 100644
--- a/libavcodec/v4l2_m2m_dec.c
+++ b/libavcodec/v4l2_m2m_dec.c
@@ -242,6 +242,7 @@ static const AVOption options[] = {
         .close          = v4l2_decode_close, \
         .bsfs           = bsf_name, \
         .capabilities   = AV_CODEC_CAP_HARDWARE | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING, \
+        .caps_internal  = FF_CODEC_CAP_SETS_PKT_DTS, \
         .wrapper_name   = "v4l2m2m", \
     };