Module: libav
Branch: master
Commit: cc06f7bd10c236539b4f6f87b795c459dd873770
Author: Vittorio Giovara <vittorio.giov...@gmail.com>
Committer: Vittorio Giovara <vittorio.giov...@gmail.com>
Date: Fri Mar 16 11:34:25 2018 -0400
libx265: Support tiny video sizes
Where tiny is less than the default CTU size.
Signed-off-by: Vittorio Giovara <vittorio.giov...@gmail.com>
---
libavcodec/libx265.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
index fd54521..8f1d60b 100644
--- a/libavcodec/libx265.c
+++ b/libavcodec/libx265.c
@@ -122,6 +122,17 @@ static av_cold int libx265_encode_init(AVCodecContext
*avctx)
ctx->params->sourceHeight = avctx->height;
ctx->params->bEnablePsnr = !!(avctx->flags & AV_CODEC_FLAG_PSNR);
+ /* Tune the CTU size based on input resolution. */
+ if (ctx->params->sourceWidth < 64 || ctx->params->sourceHeight < 64)
+ ctx->params->maxCUSize = 32;
+ if (ctx->params->sourceWidth < 32 || ctx->params->sourceHeight < 32)
+ ctx->params->maxCUSize = 16;
+ if (ctx->params->sourceWidth < 16 || ctx->params->sourceHeight < 16) {
+ av_log(avctx, AV_LOG_ERROR, "Image size is too small (%dx%d).\n",
+ ctx->params->sourceWidth, ctx->params->sourceHeight);
+ return AVERROR(EINVAL);
+ }
+
if ((avctx->color_primaries <= AVCOL_PRI_BT2020 &&
avctx->color_primaries != AVCOL_PRI_UNSPECIFIED) ||
(avctx->color_trc <= AVCOL_TRC_BT2020_12 &&
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