compilation error

[Karl-Philipp Richter]

Running `./build_ffmpeg.sh && scons` fails due to

    gcc -o src/avinfo.o -c -DPACKAGE_VERSION=\"0.29-20-gf79141a\" -DPACKAGE_STRING=\"ffmpeg2theora-0.29-20-gf79141a\" -DPACKAGE=\"ffmpeg2theora\" -D_FILE_OFFSET_BITS=64 -Iffmpeg -DUSE_SWRESAMPLE -pthread -DHAVE_KATE -DHAVE_OGGKATE -DHAVE_ICONV -I. -I/usr/local/include src/avinfo.c
    src/avinfo.c: In function 'json_codec_info':
    src/avinfo.c:182:29: error: 'PIX_FMT_NONE' undeclared (first use in this function)
             if (enc->pix_fmt != PIX_FMT_NONE) {
                                 ^
    src/avinfo.c:182:29: note: each undeclared identifier is reported only once for each function it appears in
    scons: *** [src/avinfo.o] Error 1
    scons: building terminated because of errors.

experienced with 0.29-20-gf79141a

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ffmpeg2theora 0.29.0~git+20140316-3
ProcVersionSignature: Ubuntu 3.19.0-30.33-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Sep 25 19:26:00 2015
InstallationDate: Installed on 2015-09-14 (10 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: ffmpeg2theora
UpgradeStatus: No upgrade log present (probably fresh install)