error: ‘x264_bit_depth’ undeclared (first use in this function)

When installing ffmpeg, i get error

CC	libavcodec/libvorbisenc.o
CC	libavcodec/libx264.o
libavcodec/libx264.c: In function ‘X264_frame’:
libavcodec/libx264.c:282:9: error: ‘x264_bit_depth’ undeclared (first use in this function)
     if (x264_bit_depth > 8)
         ^
libavcodec/libx264.c:282:9: note: each undeclared identifier is reported only once for each function it appears in
libavcodec/libx264.c: In function ‘X264_init_static’:
libavcodec/libx264.c:892:9: error: ‘x264_bit_depth’ undeclared (first use in this function)
     if (x264_bit_depth == 8)
         ^
make: *** [libavcodec/libx264.o] Error 1

This is due to incompatability with ffmpeg and x264.

What you can do is try another version of x264. You will be able to download older version of x264 from

ftp://ftp.videolan.org/pub/x264/snapshots

On 2018-08-14, it failed with latest stable snapshot. So i tried 14 days old stable snapshot

cd /usr/local/src/
wget ftp://ftp.videolan.org/pub/x264/snapshots/x264-snapshot-20180730-2245-stable.tar.bz2
tar xvf x264-snapshot-20180730-2245-stable.tar.bz2
cd /usr/local/src/x264-snapshot-20180730-2245-stable
make clean && make distclean
./configure --prefix=/usr --enable-shared
make && make install
ldconfig

This worked with ffmpeg.

Solution here is to try latet version first, if it did not work, try older version, say try 1 month old version, if that did not work, go back 2 months, see if that works.

Now install ffmpeg with

cd /usr/local/src/
wget https://github.com/FFmpeg/FFmpeg/archive/n3.3.5.tar.gz
tar zxf n3.3.5.tar.gz
cd /usr/local/src/FFmpeg-n3.3.5/
ldconfig
make clean && make distclean
./configure --prefix=/usr --enable-shared --enable-libxvid --enable-libvorbis --enable-libtheora --enable-libmp3lame --enable-gpl --enable-libfdk-aac --enable-nonfree --enable-libx264 --enable-libfreetype
make && make install && ldconfig