avconv: VAAPI hwcontext initialisation and hwaccel helper

Signed-off-by: Anton Khirnov <anton@khirnov.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/avconv.c b/avconv.c
index 68e35151b0..07c81fa2ad 100644
--- a/avconv.c
+++ b/avconv.c
@@ -2736,6 +2736,8 @@ static int transcode(void)
         }
     }
 
+    av_buffer_unref(&hw_device_ctx);
+
     /* finished ! */
     ret = 0;