lavc: set defaults in internal codec frames

This is required specifically for setting frame->format to -1,
otherwise it will be set to 0 = PIX_FMT_YUV420P and code reading
the format from the output decoded frame will get misled.

In particular fix regressions occurring with the pending vsrc_buffer
patch.

1 files changed, 1 insertions, 0 deletions

diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c
index fb7bb8f8fd..8cbe1a8111 100644
--- a/libavcodec/dnxhddec.c
+++ b/libavcodec/dnxhddec.c
@@ -55,6 +55,7 @@ static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
     ctx->avctx = avctx;
     dsputil_init(&ctx->dsp, avctx);
     avctx->coded_frame = &ctx->picture;
+    avcodec_get_frame_defaults(&ctx->picture);
     ctx->picture.type = AV_PICTURE_TYPE_I;
     ctx->picture.key_frame = 1;
     return 0;