~/cinelerra/cinelerra-5.1 $ git diff blds/termux.bld
diff --git a/cinelerra-5.1/blds/termux.bld b/cinelerra-5.1/blds/termux.bld
index afa14a74..7cbcdf2a 100755
--- a/cinelerra-5.1/blds/termux.bld
+++ b/cinelerra-5.1/blds/termux.bld
@@ -1,6 +1,6 @@
#!/bin/bash
# Produced, tested, and used by Andrew-R on an Android tablet
-export FFMPEG_EXTRA_CFG="--disable-debug --disable-doc --disable-ffprobe --enable-libdav1d"
-export EXTRA_LIBS="-ldav1d"
+export FFMPEG_EXTRA_CFG="--disable-debug --enable-opencl --disable-doc --disable-ffprobe --enable-libdav1d"
+export EXTRA_LIBS="-ldav1d -lOpenCL"
./configure --without-lv2 --without-vdpau --without-vaapi --without-ladspa-build \
--without-nv --with-single-user --with-clang --without-gl --disable-dav1d
So, for some reason your ffmpeg build as done by cingg does not pick up those opencl variables?