since there is only debug log 'no picture ooo' when droping a picture, I spent much time to troubleshooting a wrong sps 'num_reorder_frames' param changed by webrtc's 'ParseAndRewriteSps', FFmpeg keeped silence about this error, so a warning log is much helpfull about this. Signed-off-by: zourenyi --- libavcodec/h264_slice.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c index c21004df97..f8bf8fe36e 100644 --- a/libavcodec/h264_slice.c +++ b/libavcodec/h264_slice.c @@ -1533,7 +1533,14 @@ static int h264_select_output_frame(H264Context *h) } } } else { - av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : ""); + if (out_of_order) { + av_log(h->avctx, AV_LOG_WARNING, + "drop picture(%c, %d) because of ooo\n", + av_get_picture_type_char(out->f->pict_type), out->poc); + } + else { + av_log(h->avctx, AV_LOG_DEBUG, "no picture\n"); + } } return 0; -- 2.32.0.windows.2