[FFmpeg-devel] [PATCH] lavc/libx264: add a warning when using qscale

[James Darnley]

This addresses ticket #3238.
---
 libavcodec/libx264.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 6007630..644a582 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -330,6 +330,9 @@ static av_cold int X264_init(AVCodecContext *avctx)
     X264Context *x4 = avctx->priv_data;
     int sw,sh;
 
+    if (avctx->global_quality > 0)
+        av_log(avctx, AV_LOG_WARNING, "-qscale is ignored, -crf is preferred.\n");
+
     x264_param_default(&x4->params);
 
     x4->params.b_deblocking_filter         = avctx->flags & CODEC_FLAG_LOOP_FILTER;
-- 
1.7.9