On 4/25/2022 6:02 PM, Jan Ekström wrote:
Support for configuring this was added with version 1.0.0.
---
libavcodec/libsvtav1.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
index 2e3d96ce37..a670dab822 100644
--- a/libavcodec/libsvtav1.c
+++ b/libavcodec/libsvtav1.c
@@ -205,6 +205,28 @@ static int config_enc_params(EbSvtAv1EncConfiguration
*param,
else
param->color_range = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
+#if SVT_AV1_CHECK_VERSION(1, 0, 0)
+ if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
+ switch (avctx->chroma_sample_location) {
+ case AVCHROMA_LOC_LEFT:
+ param->chroma_sample_position = EB_CSP_VERTICAL;
+ break;
+ case AVCHROMA_LOC_TOPLEFT:
+ param->chroma_sample_position = EB_CSP_COLOCATED;
+ break;
+ default:
+ av_log(avctx, AV_LOG_INFO,
+ "Specified chroma sample location %s (%d) is unsupported "
+ "on the AV1 bit stream level. Usage of a container that "
+ "allows passing this information - such as Matroska - "
+ "is recommended.\n",
+ av_chroma_location_name(avctx->chroma_sample_location),
This can return NULL on invalid AVChromaLocation values, so better check
for that and print a different log message.
+ avctx->chroma_sample_location);
+ break;
+ }
+ }
+#endif
+
if (avctx->profile != FF_PROFILE_UNKNOWN)
param->profile = avctx->profile;
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