1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 65c8535359..9c246c455c 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -2645,6 +2645,10 @@ int avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame);
  *                  packets are ignored, and sending frames will return
  *                  AVERROR_EOF.
  *
+ *                  frame->time_base should be set to the same value as
+ *                  avctx->time_base. This is not required yet, but may be in
+ *                  the future.
+ *
  *                  For audio:
  *                  If AV_CODEC_CAP_VARIABLE_FRAME_SIZE is set, then each frame
  *                  can have any number of samples.