+--- xpra-0.17.5/xpra/codecs/dec_avcodec2/decoder.pyx~ 2016-05-26 17:47:10.000000000 +0200
++++ xpra-0.17.5/xpra/codecs/dec_avcodec2/decoder.pyx 2018-04-29 19:24:10.048722014 +0200
+@@ -65,7 +65,7 @@
+ AVPixelFormat AV_PIX_FMT_GBRP
+
+ cdef extern from "libavcodec/avcodec.h":
+- int CODEC_FLAG2_FAST
++ int AV_CODEC_FLAG2_FAST
+
+ ctypedef struct AVFrame:
+ uint8_t **data
+@@ -361,7 +361,7 @@
+ self.codec_ctx.thread_safe_callbacks = 1
+ self.codec_ctx.thread_type = 2 #FF_THREAD_SLICE: allow more than one thread per frame
+ self.codec_ctx.thread_count = 0 #auto
+- self.codec_ctx.flags2 |= CODEC_FLAG2_FAST #may cause "no deblock across slices" - which should be fine
++ self.codec_ctx.flags2 |= AV_CODEC_FLAG2_FAST #may cause "no deblock across slices" - which should be fine
+ r = avcodec_open2(self.codec_ctx, self.codec, NULL)
+ if r<0:
+ log.error("could not open codec: %s", self.av_error_str(r))