diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c index 7f7d4aedaf..176c6b6bfc 100644 --- a/libavcodec/libvpxenc.c +++ b/libavcodec/libvpxenc.c @@ -330,10 +330,15 @@ static av_cold int vpx_init(AVCodecContext *avctx, } } - if (avctx->qmin >= 0) - enccfg.rc_min_quantizer = avctx->qmin; - if (avctx->qmax >= 0) - enccfg.rc_max_quantizer = avctx->qmax; + if (avctx->codec_id == AV_CODEC_ID_VP9 && ctx->lossless == 1) { + enccfg.rc_min_quantizer = + enccfg.rc_max_quantizer = 0; + } else { + if (avctx->qmin >= 0) + enccfg.rc_min_quantizer = avctx->qmin; + if (avctx->qmax >= 0) + enccfg.rc_max_quantizer = avctx->qmax; + } if (enccfg.rc_end_usage == VPX_CQ #if CONFIG_LIBVPX_VP9_ENCODER