[FFmpeg-cvslog] proresenc_ks: use chroma sampling in autoselection

[Christophe Gisquet]

ffmpeg | branch: master | Christophe Gisquet <christophe.gisquet at gmail.com> | Sat Aug 30 15:04:03 2014 +0200| [140f535517e93409b4718b25094528d2a367737e] | committer: Michael Niedermayer

proresenc_ks: use chroma sampling in autoselection

If the chroma planes aren't subsampled, automatically select
the 4:4:4:4 profile.

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=140f535517e93409b4718b25094528d2a367737e
---

 libavcodec/proresenc_kostya.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavcodec/proresenc_kostya.c b/libavcodec/proresenc_kostya.c
index ad27e16..5f432a9 100644
--- a/libavcodec/proresenc_kostya.c
+++ b/libavcodec/proresenc_kostya.c
@@ -1148,11 +1148,13 @@ static av_cold int encode_init(AVCodecContext *avctx)
         return AVERROR(EINVAL);
     }
     if (ctx->profile == PRORES_PROFILE_AUTO) {
-        ctx->profile = av_pix_fmt_desc_get(avctx->pix_fmt)->flags & AV_PIX_FMT_FLAG_ALPHA
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+        ctx->profile = (desc->flags & AV_PIX_FMT_FLAG_ALPHA ||
+                        !(desc->log2_chroma_w + desc->log2_chroma_h))
                      ? PRORES_PROFILE_4444 : PRORES_PROFILE_HQ;
         av_log(avctx, AV_LOG_INFO, "Autoselected %s. It can be overridden "
                "through -profile option.\n", ctx->profile == PRORES_PROFILE_4444
-               ? "4:4:4:4 profile because of the alpha channel"
+               ? "4:4:4:4 profile because of the used input colorspace"
                : "HQ profile to keep best quality");
     }
     if (av_pix_fmt_desc_get(avctx->pix_fmt)->flags & AV_PIX_FMT_FLAG_ALPHA) {