FF_GL_INFO_LOG_LENGTH  756 libavdevice/opengl_enc.c         opengl->glprocs.glGetShaderiv(shader, FF_GL_INFO_LOG_LENGTH, &result);
FF_GL_INFO_LOG_LENGTH  808 libavdevice/opengl_enc.c         opengl->glprocs.glGetProgramiv(opengl->program, FF_GL_INFO_LOG_LENGTH, &result);