From 44bcb636c1a7052059330c3edbd900246e15ae60 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <cehoyos@ag.or.at>
Date: Fri, 16 Sep 2016 14:21:09 +0200
Subject: [PATCH] lavc/libvpxenc: Avoid vp8 transparency encoding with
auto-alt-ref.
Fixes ticket #5815.
---
libavcodec/libvpxenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index f3cff812bb8..2db87f7f2a2 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -631,6 +631,11 @@ FF_ENABLE_DEPRECATION_WARNINGS
if (ctx->tune >= 0)
codecctl_int(avctx, VP8E_SET_TUNING, ctx->tune);
+ if (ctx->auto_alt_ref && ctx->is_alpha && avctx->codec_id == AV_CODEC_ID_VP8) {
+ av_log(avctx, AV_LOG_ERROR, "Transparency encoding with auto_alt_ref does not work\n");
+ return AVERROR(EINVAL);
+ }
+
if (CONFIG_LIBVPX_VP8_ENCODER && avctx->codec_id == AV_CODEC_ID_VP8) {
#if FF_API_PRIVATE_OPT
FF_DISABLE_DEPRECATION_WARNINGS
--
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