On Tue, 28 Apr 2020, Linjie Fu wrote:

Libopenh264enc would set the slice according to the number of cpu cores
if uiSliceNum equals to 0 (auto) in SM_FIXEDSLCNUM_SLICE mode.

Prompt a warning for user to catch this.

Signed-off-by: Linjie Fu <linjie...@intel.com>
---
libavcodec/libopenh264enc.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/libavcodec/libopenh264enc.c b/libavcodec/libopenh264enc.c
index 93d3de2..6487ce5 100644
--- a/libavcodec/libopenh264enc.c
+++ b/libavcodec/libopenh264enc.c
@@ -247,6 +247,8 @@ FF_ENABLE_DEPRECATION_WARNINGS
    param.sSpatialLayers[0].sSliceCfg.uiSliceMode               = s->slice_mode;
    param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices;
#endif
+    if (avctx->slices == 0 && s->slice_mode == SM_FIXEDSLCNUM_SLICE)
+        av_log(avctx, AV_LOG_WARNING, "Slice count will be set 
automatically\n");

    if (s->slice_mode == SM_SIZELIMITED_SLICE) {
        if (s->max_nal_size) {
--
2.7.4

This is ok with me.

// Martin

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