[FFmpeg-devel] [PATCH v4 10/13] ffmpeg: pass first video AVFrame's side data to encoder

["Jan Ekström" <jeebjp@gmail.com>]

This enables further configuration of output based on the results
of input decoding and filtering in a similar manner as the color
information.
---
 fftools/ffmpeg_enc.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/fftools/ffmpeg_enc.c b/fftools/ffmpeg_enc.c
index f28884e50c..0d022700cf 100644
--- a/fftools/ffmpeg_enc.c
+++ b/fftools/ffmpeg_enc.c
@@ -356,6 +356,19 @@ int enc_open(OutputStream *ost, AVFrame *frame)
         enc_ctx->colorspace             = frame->colorspace;
         enc_ctx->chroma_sample_location = frame->chroma_location;
 
+        ret = av_frame_side_data_set_extend(
+            &enc_ctx->frame_sd_set,
+            (const AVFrameSideDataSet){
+                .sd    = frame->side_data,
+                .nb_sd = frame->nb_side_data
+            },
+            AV_FRAME_SIDE_DATA_SET_FLAG_NO_DUPLICATES);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "failed to configure video encoder: %s!\n",
+                   av_err2str(ret));
+            return ret;
+        }
+
         // Field order: autodetection
         if (enc_ctx->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
             ost->top_field_first >= 0)
-- 
2.41.0

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